[linux.git] / fs / ext4 / xattr.h

/*
  File: fs/ext4/xattr.h

  On-disk format of extended attributes for the ext4 filesystem.

  (C) 2001 Andreas Gruenbacher, <[email protected]>
*/

#include <linux/xattr.h>

/* Magic value in attribute blocks */
#define EXT4_XATTR_MAGIC		0xEA020000

/* Maximum number of references to one attribute block */
#define EXT4_XATTR_REFCOUNT_MAX		1024

/* Name indexes */
#define EXT4_XATTR_INDEX_USER			1
#define EXT4_XATTR_INDEX_POSIX_ACL_ACCESS	2
#define EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT	3
#define EXT4_XATTR_INDEX_TRUSTED		4
#define	EXT4_XATTR_INDEX_LUSTRE			5
#define EXT4_XATTR_INDEX_SECURITY	        6
#define EXT4_XATTR_INDEX_SYSTEM			7

struct ext4_xattr_header {
	__le32	h_magic;	/* magic number for identification */
	__le32	h_refcount;	/* reference count */
	__le32	h_blocks;	/* number of disk blocks used */
	__le32	h_hash;		/* hash value of all attributes */
	__le32	h_checksum;	/* crc32c(uuid+id+xattrblock) */
				/* id = inum if refcount=1, blknum otherwise */
	__u32	h_reserved[3];	/* zero right now */
};

struct ext4_xattr_ibody_header {
	__le32	h_magic;	/* magic number for identification */
};

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_size;	/* size of attribute value */
	__le32	e_hash;		/* hash value of name and value */
	char	e_name[0];	/* attribute name */
};

#define EXT4_XATTR_PAD_BITS		2
#define EXT4_XATTR_PAD		(1<<EXT4_XATTR_PAD_BITS)
#define EXT4_XATTR_ROUND		(EXT4_XATTR_PAD-1)
#define EXT4_XATTR_LEN(name_len) \
	(((name_len) + EXT4_XATTR_ROUND + \
	sizeof(struct ext4_xattr_entry)) & ~EXT4_XATTR_ROUND)
#define EXT4_XATTR_NEXT(entry) \
	((struct ext4_xattr_entry *)( \
	 (char *)(entry) + EXT4_XATTR_LEN((entry)->e_name_len)))
#define EXT4_XATTR_SIZE(size) \
	(((size) + EXT4_XATTR_ROUND) & ~EXT4_XATTR_ROUND)

#define IHDR(inode, raw_inode) \
	((struct ext4_xattr_ibody_header *) \
		((void *)raw_inode + \
		EXT4_GOOD_OLD_INODE_SIZE + \
		EXT4_I(inode)->i_extra_isize))
#define IFIRST(hdr) ((struct ext4_xattr_entry *)((hdr)+1))

#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)
#define IS_LAST_ENTRY(entry) (*(__u32 *)(entry) == 0)


struct ext4_xattr_info {
	int name_index;
	const char *name;
	const void *value;
	size_t value_len;
};

struct ext4_xattr_search {
	struct ext4_xattr_entry *first;
	void *base;
	void *end;
	struct ext4_xattr_entry *here;
	int not_found;
};

struct ext4_xattr_ibody_find {
	struct ext4_xattr_search s;
	struct ext4_iloc iloc;
};

# ifdef CONFIG_EXT4_FS_XATTR

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_acl_access_handler;
extern const struct xattr_handler ext4_xattr_acl_default_handler;
extern const struct xattr_handler ext4_xattr_security_handler;

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 void ext4_xattr_delete_inode(handle_t *, struct inode *);
extern void ext4_xattr_put_super(struct super_block *);

extern int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
			    struct ext4_inode *raw_inode, handle_t *handle);

extern int __init ext4_init_xattr(void);
extern void ext4_exit_xattr(void);

extern const struct xattr_handler *ext4_xattr_handlers[];

extern int ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,
				 struct ext4_xattr_ibody_find *is);
extern int ext4_xattr_ibody_get(struct inode *inode, int name_index,
				const char *name,
				void *buffer, size_t buffer_size);
extern int ext4_xattr_ibody_set(handle_t *handle, struct inode *inode,
				struct ext4_xattr_info *i,
				struct ext4_xattr_ibody_find *is);

extern int ext4_has_inline_data(struct inode *inode);
extern int ext4_get_inline_size(struct inode *inode);
extern int ext4_get_max_inline_size(struct inode *inode);
extern int ext4_find_inline_data_nolock(struct inode *inode);
extern void ext4_write_inline_data(struct inode *inode,
				   struct ext4_iloc *iloc,
				   void *buffer, loff_t pos,
				   unsigned int len);
extern int ext4_prepare_inline_data(handle_t *handle, struct inode *inode,
				    unsigned int len);
extern int ext4_init_inline_data(handle_t *handle, struct inode *inode,
				 unsigned int len);
extern int ext4_destroy_inline_data(handle_t *handle, struct inode *inode);

extern int ext4_readpage_inline(struct inode *inode, struct page *page);
extern int ext4_try_to_write_inline_data(struct address_space *mapping,
					 struct inode *inode,
					 loff_t pos, unsigned len,
					 unsigned flags,
					 struct page **pagep);
extern int ext4_write_inline_data_end(struct inode *inode,
				      loff_t pos, unsigned len,
				      unsigned copied,
				      struct page *page);
extern struct buffer_head *
ext4_journalled_write_inline_data(struct inode *inode,
				  unsigned len,
				  struct page *page);
extern int ext4_da_write_inline_data_begin(struct address_space *mapping,
					   struct inode *inode,
					   loff_t pos, unsigned len,
					   unsigned flags,
					   struct page **pagep,
					   void **fsdata);
extern int ext4_da_write_inline_data_end(struct inode *inode, loff_t pos,
					 unsigned len, unsigned copied,
					 struct page *page);
extern int ext4_try_add_inline_entry(handle_t *handle, struct dentry *dentry,
				     struct inode *inode);
extern int ext4_try_create_inline_dir(handle_t *handle,
				      struct inode *parent,
				      struct inode *inode);
extern int ext4_read_inline_dir(struct file *filp,
				void *dirent, filldir_t filldir,
				int *has_inline_data);
extern struct buffer_head *ext4_find_inline_entry(struct inode *dir,
					const struct qstr *d_name,
					struct ext4_dir_entry_2 **res_dir,
					int *has_inline_data);
# else  /* CONFIG_EXT4_FS_XATTR */

static inline int
ext4_xattr_get(struct inode *inode, int name_index, const char *name,
	       void *buffer, size_t size, int flags)
{
	return -EOPNOTSUPP;
}

static inline int
ext4_xattr_set(struct inode *inode, int name_index, const char *name,
	       const void *value, size_t size, int flags)
{
	return -EOPNOTSUPP;
}

static inline int
ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index,
	       const char *name, const void *value, size_t size, int flags)
{
	return -EOPNOTSUPP;
}

static inline void
ext4_xattr_delete_inode(handle_t *handle, struct inode *inode)
{
}

static inline void
ext4_xattr_put_super(struct super_block *sb)
{
}

static __init inline int
ext4_init_xattr(void)
{
	return 0;
}

static inline void
ext4_exit_xattr(void)
{
}

static inline int
ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
			    struct ext4_inode *raw_inode, handle_t *handle)
{
	return -EOPNOTSUPP;
}

#define ext4_xattr_handlers	NULL

static inline int
ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,
		      struct ext4_xattr_ibody_find *is)
{
	return -EOPNOTSUPP;
}

static inline int
ext4_xattr_ibody_set(handle_t *handle, struct inode *inode,
		     struct ext4_xattr_info *i,
		     struct ext4_xattr_ibody_find *is)
{
	return -EOPNOTSUPP;
}

static inline int
ext4_xattr_ibody_get(struct inode *inode, int name_index,
		     const char *name,
		     void *buffer, size_t buffer_size)
{
	return -EOPNOTSUPP;
}

static inline int ext4_find_inline_data_nolock(struct inode *inode)
{
	return 0;
}

static inline int ext4_has_inline_data(struct inode *inode)
{
	return 0;
}

static inline int ext4_get_inline_size(struct inode *inode)
{
	return 0;
}

static inline int ext4_get_max_inline_size(struct inode *inode)
{
	return 0;
}

static inline void ext4_write_inline_data(struct inode *inode,
					  struct ext4_iloc *iloc,
					  void *buffer, loff_t pos,
					  unsigned int len)
{
	return;
}

static inline int ext4_init_inline_data(handle_t *handle,
					struct inode *inode,
					unsigned int len)
{
	return 0;
}

static inline int ext4_destroy_inline_data(handle_t *handle,
					   struct inode *inode)
{
	return 0;
}

static inline int ext4_readpage_inline(struct inode *inode, struct page *page)
{
	return 0;
}

static inline int ext4_try_to_write_inline_data(struct address_space *mapping,
						struct inode *inode,
						loff_t pos, unsigned len,
						unsigned flags,
						struct page **pagep)
{
	return 0;
}

static inline int ext4_write_inline_data_end(struct inode *inode,
					     loff_t pos, unsigned len,
					     unsigned copied,
					     struct page *page)
{
	return 0;
}

static inline struct buffer_head *
ext4_journalled_write_inline_data(struct inode *inode,
				  unsigned len,
				  struct page *page)
{
	return NULL;
}

static inline int
ext4_da_write_inline_data_begin(struct address_space *mapping,
				struct inode *inode,
				loff_t pos, unsigned len,
				unsigned flags,
				struct page **pagep,
				void **fsdata)
{
	return 0;
}

static inline int ext4_da_write_inline_data_end(struct inode *inode, loff_t pos,
						unsigned len, unsigned copied,
						struct page *page)
{
	return 0;
}

static inline int ext4_try_add_inline_entry(handle_t *handle,
					    struct dentry *dentry,
					    struct inode *inode)
{
	return 0;
}

static inline int ext4_try_create_inline_dir(handle_t *handle,
					     struct inode *parent,
					     struct inode *inode)
{
	return 0;
}
static inline int ext4_read_inline_dir(struct file *filp,
				       void *dirent, filldir_t filldir,
				       int *has_inline_data)
{
	return 0;
}

static inline struct buffer_head *
ext4_find_inline_entry(struct inode *dir,
		       const struct qstr *d_name,
		       struct ext4_dir_entry_2 **res_dir,
		       int *has_inline_data)
{
	return NULL;
}
# endif  /* CONFIG_EXT4_FS_XATTR */

#ifdef CONFIG_EXT4_FS_SECURITY
extern int ext4_init_security(handle_t *handle, struct inode *inode,
			      struct inode *dir, const struct qstr *qstr);
#else
static inline int ext4_init_security(handle_t *handle, struct inode *inode,
				     struct inode *dir, const struct qstr *qstr)
{
	return 0;
}
#endif
Commit	Line	Data
ac27a0ec	1	/*
617ba13b	2	File: fs/ext4/xattr.h
ac27a0ec	3
617ba13b	4	On-disk format of extended attributes for the ext4 filesystem.
ac27a0ec DK	5
	6	(C) 2001 Andreas Gruenbacher, <[email protected]>
	7	*/
	8
	9	#include <linux/xattr.h>
	10
	11	/* Magic value in attribute blocks */
617ba13b	12	#define EXT4_XATTR_MAGIC 0xEA020000
ac27a0ec DK	13
ac27a0ec DK	14	/* Maximum number of references to one attribute block */
617ba13b	15	#define EXT4_XATTR_REFCOUNT_MAX 1024
ac27a0ec DK	16
ac27a0ec DK	17	/* Name indexes */
617ba13b MC	18	#define EXT4_XATTR_INDEX_USER 1
	19	#define EXT4_XATTR_INDEX_POSIX_ACL_ACCESS 2
	20	#define EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT 3
	21	#define EXT4_XATTR_INDEX_TRUSTED 4
	22	#define EXT4_XATTR_INDEX_LUSTRE 5
	23	#define EXT4_XATTR_INDEX_SECURITY 6
67cf5b09	24	#define EXT4_XATTR_INDEX_SYSTEM 7
617ba13b MC	25
617ba13b MC	26	struct ext4_xattr_header {
ac27a0ec DK	27	__le32 h_magic; /* magic number for identification */
	28	__le32 h_refcount; /* reference count */
	29	__le32 h_blocks; /* number of disk blocks used */
	30	__le32 h_hash; /* hash value of all attributes */
e6153918 DW	31	__le32 h_checksum; /* crc32c(uuid+id+xattrblock) */
	32	/* id = inum if refcount=1, blknum otherwise */
	33	__u32 h_reserved[3]; /* zero right now */
ac27a0ec DK	34	};
ac27a0ec DK	35
617ba13b	36	struct ext4_xattr_ibody_header {
ac27a0ec DK	37	__le32 h_magic; /* magic number for identification */
	38	};
	39
617ba13b	40	struct ext4_xattr_entry {
ac27a0ec DK	41	__u8 e_name_len; /* length of name */
	42	__u8 e_name_index; /* attribute name index */
	43	__le16 e_value_offs; /* offset in disk block of value */
	44	__le32 e_value_block; /* disk block attribute is stored on (n/i) */
	45	__le32 e_value_size; /* size of attribute value */
	46	__le32 e_hash; /* hash value of name and value */
	47	char e_name[0]; /* attribute name */
	48	};
	49
617ba13b MC	50	#define EXT4_XATTR_PAD_BITS 2
	51	#define EXT4_XATTR_PAD (1<<EXT4_XATTR_PAD_BITS)
	52	#define EXT4_XATTR_ROUND (EXT4_XATTR_PAD-1)
	53	#define EXT4_XATTR_LEN(name_len) \
	54	(((name_len) + EXT4_XATTR_ROUND + \
	55	sizeof(struct ext4_xattr_entry)) & ~EXT4_XATTR_ROUND)
	56	#define EXT4_XATTR_NEXT(entry) \
af5bc92d TT	57	((struct ext4_xattr_entry *)( \
af5bc92d TT	58	(char *)(entry) + EXT4_XATTR_LEN((entry)->e_name_len)))
617ba13b MC	59	#define EXT4_XATTR_SIZE(size) \
617ba13b MC	60	(((size) + EXT4_XATTR_ROUND) & ~EXT4_XATTR_ROUND)
ac27a0ec	61
6dd4ee7c KS	62	#define IHDR(inode, raw_inode) \
	63	((struct ext4_xattr_ibody_header *) \
	64	((void *)raw_inode + \
	65	EXT4_GOOD_OLD_INODE_SIZE + \
	66	EXT4_I(inode)->i_extra_isize))
	67	#define IFIRST(hdr) ((struct ext4_xattr_entry *)((hdr)+1))
	68
879b3825 TM	69	#define BHDR(bh) ((struct ext4_xattr_header *)((bh)->b_data))
	70	#define ENTRY(ptr) ((struct ext4_xattr_entry *)(ptr))
	71	#define BFIRST(bh) ENTRY(BHDR(bh)+1)
	72	#define IS_LAST_ENTRY(entry) ((__u32 )(entry) == 0)
	73
	74
	75	struct ext4_xattr_info {
	76	int name_index;
	77	const char *name;
	78	const void *value;
	79	size_t value_len;
	80	};
	81
	82	struct ext4_xattr_search {
	83	struct ext4_xattr_entry *first;
	84	void *base;
	85	void *end;
	86	struct ext4_xattr_entry *here;
	87	int not_found;
	88	};
	89
	90	struct ext4_xattr_ibody_find {
	91	struct ext4_xattr_search s;
	92	struct ext4_iloc iloc;
	93	};
	94
03010a33	95	# ifdef CONFIG_EXT4_FS_XATTR
ac27a0ec	96
11e27528 SH	97	extern const struct xattr_handler ext4_xattr_user_handler;
	98	extern const struct xattr_handler ext4_xattr_trusted_handler;
	99	extern const struct xattr_handler ext4_xattr_acl_access_handler;
	100	extern const struct xattr_handler ext4_xattr_acl_default_handler;
	101	extern const struct xattr_handler ext4_xattr_security_handler;
ac27a0ec	102
617ba13b	103	extern ssize_t ext4_listxattr(struct dentry , char , size_t);
ac27a0ec	104
617ba13b	105	extern int ext4_xattr_get(struct inode , int, const char , void *, size_t);
617ba13b MC	106	extern int ext4_xattr_set(struct inode , int, const char , const void *, size_t, int);
617ba13b MC	107	extern int ext4_xattr_set_handle(handle_t , struct inode , int, const char , const void , size_t, int);
ac27a0ec	108
617ba13b MC	109	extern void ext4_xattr_delete_inode(handle_t , struct inode );
617ba13b MC	110	extern void ext4_xattr_put_super(struct super_block *);
ac27a0ec	111
6dd4ee7c KS	112	extern int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
	113	struct ext4_inode raw_inode, handle_t handle);
	114
5dabfc78 TT	115	extern int __init ext4_init_xattr(void);
5dabfc78 TT	116	extern void ext4_exit_xattr(void);
ac27a0ec	117
11e27528	118	extern const struct xattr_handler *ext4_xattr_handlers[];
ac27a0ec	119
879b3825 TM	120	extern int ext4_xattr_ibody_find(struct inode inode, struct ext4_xattr_info i,
	121	struct ext4_xattr_ibody_find *is);
	122	extern int ext4_xattr_ibody_get(struct inode *inode, int name_index,
	123	const char *name,
	124	void *buffer, size_t buffer_size);
	125	extern int ext4_xattr_ibody_set(handle_t handle, struct inode inode,
	126	struct ext4_xattr_info *i,
	127	struct ext4_xattr_ibody_find *is);
	128
67cf5b09 TM	129	extern int ext4_has_inline_data(struct inode *inode);
	130	extern int ext4_get_inline_size(struct inode *inode);
	131	extern int ext4_get_max_inline_size(struct inode *inode);
	132	extern int ext4_find_inline_data_nolock(struct inode *inode);
	133	extern void ext4_write_inline_data(struct inode *inode,
	134	struct ext4_iloc *iloc,
	135	void *buffer, loff_t pos,
	136	unsigned int len);
	137	extern int ext4_prepare_inline_data(handle_t handle, struct inode inode,
	138	unsigned int len);
	139	extern int ext4_init_inline_data(handle_t handle, struct inode inode,
	140	unsigned int len);
	141	extern int ext4_destroy_inline_data(handle_t handle, struct inode inode);
46c7f254 TM	142
46c7f254 TM	143	extern int ext4_readpage_inline(struct inode inode, struct page page);
f19d5870 TM	144	extern int ext4_try_to_write_inline_data(struct address_space *mapping,
	145	struct inode *inode,
	146	loff_t pos, unsigned len,
	147	unsigned flags,
	148	struct page **pagep);
	149	extern int ext4_write_inline_data_end(struct inode *inode,
	150	loff_t pos, unsigned len,
	151	unsigned copied,
	152	struct page *page);
3fdcfb66 TM	153	extern struct buffer_head *
	154	ext4_journalled_write_inline_data(struct inode *inode,
	155	unsigned len,
	156	struct page *page);
9c3569b5 TM	157	extern int ext4_da_write_inline_data_begin(struct address_space *mapping,
	158	struct inode *inode,
	159	loff_t pos, unsigned len,
	160	unsigned flags,
	161	struct page **pagep,
	162	void **fsdata);
	163	extern int ext4_da_write_inline_data_end(struct inode *inode, loff_t pos,
	164	unsigned len, unsigned copied,
	165	struct page *page);
3c47d541 TM	166	extern int ext4_try_add_inline_entry(handle_t handle, struct dentry dentry,
	167	struct inode *inode);
	168	extern int ext4_try_create_inline_dir(handle_t *handle,
	169	struct inode *parent,
	170	struct inode *inode);
65d165d9 TM	171	extern int ext4_read_inline_dir(struct file *filp,
	172	void *dirent, filldir_t filldir,
	173	int *has_inline_data);
e8e948e7 TM	174	extern struct buffer_head ext4_find_inline_entry(struct inode dir,
	175	const struct qstr *d_name,
	176	struct ext4_dir_entry_2 **res_dir,
	177	int *has_inline_data);
03010a33	178	# else /* CONFIG_EXT4_FS_XATTR */
ac27a0ec DK	179
ac27a0ec DK	180	static inline int
617ba13b	181	ext4_xattr_get(struct inode inode, int name_index, const char name,
ac27a0ec DK	182	void *buffer, size_t size, int flags)
	183	{
	184	return -EOPNOTSUPP;
	185	}
	186
ac27a0ec	187	static inline int
617ba13b	188	ext4_xattr_set(struct inode inode, int name_index, const char name,
ac27a0ec DK	189	const void *value, size_t size, int flags)
	190	{
	191	return -EOPNOTSUPP;
	192	}
	193
	194	static inline int
617ba13b	195	ext4_xattr_set_handle(handle_t handle, struct inode inode, int name_index,
ac27a0ec DK	196	const char name, const void value, size_t size, int flags)
	197	{
	198	return -EOPNOTSUPP;
	199	}
	200
	201	static inline void
617ba13b	202	ext4_xattr_delete_inode(handle_t handle, struct inode inode)
ac27a0ec DK	203	{
	204	}
	205
	206	static inline void
617ba13b	207	ext4_xattr_put_super(struct super_block *sb)
ac27a0ec DK	208	{
	209	}
	210
5dabfc78	211	static __init inline int
19ef2014	212	ext4_init_xattr(void)
ac27a0ec DK	213	{
	214	return 0;
	215	}
	216
	217	static inline void
5dabfc78	218	ext4_exit_xattr(void)
ac27a0ec DK	219	{
	220	}
	221
6dd4ee7c KS	222	static inline int
	223	ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
	224	struct ext4_inode raw_inode, handle_t handle)
	225	{
	226	return -EOPNOTSUPP;
	227	}
	228
617ba13b	229	#define ext4_xattr_handlers NULL
ac27a0ec	230
879b3825 TM	231	static inline int
	232	ext4_xattr_ibody_find(struct inode inode, struct ext4_xattr_info i,
	233	struct ext4_xattr_ibody_find *is)
	234	{
	235	return -EOPNOTSUPP;
	236	}
	237
	238	static inline int
	239	ext4_xattr_ibody_set(handle_t handle, struct inode inode,
	240	struct ext4_xattr_info *i,
	241	struct ext4_xattr_ibody_find *is)
	242	{
	243	return -EOPNOTSUPP;
	244	}
	245
	246	static inline int
	247	ext4_xattr_ibody_get(struct inode *inode, int name_index,
	248	const char *name,
	249	void *buffer, size_t buffer_size)
	250	{
	251	return -EOPNOTSUPP;
	252	}
	253
67cf5b09 TM	254	static inline int ext4_find_inline_data_nolock(struct inode *inode)
	255	{
	256	return 0;
	257	}
	258
	259	static inline int ext4_has_inline_data(struct inode *inode)
	260	{
	261	return 0;
	262	}
	263
	264	static inline int ext4_get_inline_size(struct inode *inode)
	265	{
	266	return 0;
	267	}
	268
	269	static inline int ext4_get_max_inline_size(struct inode *inode)
	270	{
	271	return 0;
	272	}
	273
	274	static inline void ext4_write_inline_data(struct inode *inode,
	275	struct ext4_iloc *iloc,
	276	void *buffer, loff_t pos,
	277	unsigned int len)
	278	{
	279	return;
	280	}
	281
	282	static inline int ext4_init_inline_data(handle_t *handle,
	283	struct inode *inode,
	284	unsigned int len)
	285	{
	286	return 0;
	287	}
	288
	289	static inline int ext4_destroy_inline_data(handle_t *handle,
	290	struct inode *inode)
	291	{
	292	return 0;
	293	}
46c7f254 TM	294
	295	static inline int ext4_readpage_inline(struct inode inode, struct page page)
	296	{
	297	return 0;
	298	}
f19d5870 TM	299
	300	static inline int ext4_try_to_write_inline_data(struct address_space *mapping,
	301	struct inode *inode,
	302	loff_t pos, unsigned len,
	303	unsigned flags,
	304	struct page **pagep)
	305	{
	306	return 0;
	307	}
	308
	309	static inline int ext4_write_inline_data_end(struct inode *inode,
	310	loff_t pos, unsigned len,
	311	unsigned copied,
	312	struct page *page)
	313	{
	314	return 0;
	315	}
3fdcfb66 TM	316
	317	static inline struct buffer_head *
	318	ext4_journalled_write_inline_data(struct inode *inode,
	319	unsigned len,
	320	struct page *page)
	321	{
	322	return NULL;
	323	}
9c3569b5 TM	324
	325	static inline int
	326	ext4_da_write_inline_data_begin(struct address_space *mapping,
	327	struct inode *inode,
	328	loff_t pos, unsigned len,
	329	unsigned flags,
	330	struct page **pagep,
	331	void **fsdata)
	332	{
	333	return 0;
	334	}
	335
	336	static inline int ext4_da_write_inline_data_end(struct inode *inode, loff_t pos,
	337	unsigned len, unsigned copied,
	338	struct page *page)
	339	{
	340	return 0;
	341	}
3c47d541 TM	342
	343	static inline int ext4_try_add_inline_entry(handle_t *handle,
	344	struct dentry *dentry,
	345	struct inode *inode)
	346	{
	347	return 0;
	348	}
	349
	350	static inline int ext4_try_create_inline_dir(handle_t *handle,
	351	struct inode *parent,
	352	struct inode *inode)
	353	{
	354	return 0;
	355	}
65d165d9 TM	356	static inline int ext4_read_inline_dir(struct file *filp,
	357	void *dirent, filldir_t filldir,
	358	int *has_inline_data)
	359	{
	360	return 0;
	361	}
e8e948e7 TM	362
	363	static inline struct buffer_head *
	364	ext4_find_inline_entry(struct inode *dir,
	365	const struct qstr *d_name,
	366	struct ext4_dir_entry_2 **res_dir,
	367	int *has_inline_data)
	368	{
	369	return NULL;
	370	}
03010a33	371	# endif /* CONFIG_EXT4_FS_XATTR */
ac27a0ec	372
03010a33	373	#ifdef CONFIG_EXT4_FS_SECURITY
617ba13b	374	extern int ext4_init_security(handle_t handle, struct inode inode,
2a7dba39	375	struct inode dir, const struct qstr qstr);
ac27a0ec	376	#else
617ba13b	377	static inline int ext4_init_security(handle_t handle, struct inode inode,
2a7dba39	378	struct inode dir, const struct qstr qstr)
ac27a0ec DK	379	{
	380	return 0;
	381	}
	382	#endif