[linux-2.6-block.git] / fs / ext4 / xattr.h

/*
  File: fs/ext4/xattr.h

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

  (C) 2001 Andreas Gruenbacher, <a.gruenbacher@computer.org>
*/

#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);
extern int ext4_delete_inline_entry(handle_t *handle,
				    struct inode *dir,
				    struct ext4_dir_entry_2 *de_del,
				    struct buffer_head *bh,
				    int *has_inline_data);
extern int empty_inline_dir(struct inode *dir, int *has_inline_data);
extern struct buffer_head *ext4_get_first_inline_block(struct inode *inode,
					struct ext4_dir_entry_2 **parent_de,
					int *retval);
extern int ext4_inline_data_fiemap(struct inode *inode,
				   struct fiemap_extent_info *fieinfo,
				   int *has_inline);
# 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;
}
static inline int ext4_delete_inline_entry(handle_t *handle,
					   struct inode *dir,
					   struct ext4_dir_entry_2 *de_del,
					   struct buffer_head *bh,
					   int *has_inline_data)
{
	return 0;
}

static inline int empty_inline_dir(struct inode *dir, int *has_inline_data)
{
	return 0;
}

static inline struct buffer_head *
ext4_get_first_inline_block(struct inode *inode,
			    struct ext4_dir_entry_2 **parent_de,
			    int *retval)
{
	return NULL;
}

static inline int ext4_inline_data_fiemap(struct inode *inode,
					  struct fiemap_extent_info *fieinfo,
					  int *has_inline)
{
	return 0;
}
# 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, <a.gruenbacher@computer.org>
	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);
9f40fe54 TM	178	extern int ext4_delete_inline_entry(handle_t *handle,
	179	struct inode *dir,
	180	struct ext4_dir_entry_2 *de_del,
	181	struct buffer_head *bh,
	182	int *has_inline_data);
61f86638	183	extern int empty_inline_dir(struct inode dir, int has_inline_data);
32f7f22c TM	184	extern struct buffer_head ext4_get_first_inline_block(struct inode inode,
	185	struct ext4_dir_entry_2 **parent_de,
	186	int *retval);
94191985 TM	187	extern int ext4_inline_data_fiemap(struct inode *inode,
	188	struct fiemap_extent_info *fieinfo,
	189	int *has_inline);
03010a33	190	# else /* CONFIG_EXT4_FS_XATTR */
ac27a0ec DK	191
ac27a0ec DK	192	static inline int
617ba13b	193	ext4_xattr_get(struct inode inode, int name_index, const char name,
ac27a0ec DK	194	void *buffer, size_t size, int flags)
	195	{
	196	return -EOPNOTSUPP;
	197	}
	198
ac27a0ec	199	static inline int
617ba13b	200	ext4_xattr_set(struct inode inode, int name_index, const char name,
ac27a0ec DK	201	const void *value, size_t size, int flags)
	202	{
	203	return -EOPNOTSUPP;
	204	}
	205
	206	static inline int
617ba13b	207	ext4_xattr_set_handle(handle_t handle, struct inode inode, int name_index,
ac27a0ec DK	208	const char name, const void value, size_t size, int flags)
	209	{
	210	return -EOPNOTSUPP;
	211	}
	212
	213	static inline void
617ba13b	214	ext4_xattr_delete_inode(handle_t handle, struct inode inode)
ac27a0ec DK	215	{
	216	}
	217
	218	static inline void
617ba13b	219	ext4_xattr_put_super(struct super_block *sb)
ac27a0ec DK	220	{
	221	}
	222
5dabfc78	223	static __init inline int
19ef2014	224	ext4_init_xattr(void)
ac27a0ec DK	225	{
	226	return 0;
	227	}
	228
	229	static inline void
5dabfc78	230	ext4_exit_xattr(void)
ac27a0ec DK	231	{
	232	}
	233
6dd4ee7c KS	234	static inline int
	235	ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
	236	struct ext4_inode raw_inode, handle_t handle)
	237	{
	238	return -EOPNOTSUPP;
	239	}
	240
617ba13b	241	#define ext4_xattr_handlers NULL
ac27a0ec	242
879b3825 TM	243	static inline int
	244	ext4_xattr_ibody_find(struct inode inode, struct ext4_xattr_info i,
	245	struct ext4_xattr_ibody_find *is)
	246	{
	247	return -EOPNOTSUPP;
	248	}
	249
	250	static inline int
	251	ext4_xattr_ibody_set(handle_t handle, struct inode inode,
	252	struct ext4_xattr_info *i,
	253	struct ext4_xattr_ibody_find *is)
	254	{
	255	return -EOPNOTSUPP;
	256	}
	257
	258	static inline int
	259	ext4_xattr_ibody_get(struct inode *inode, int name_index,
	260	const char *name,
	261	void *buffer, size_t buffer_size)
	262	{
	263	return -EOPNOTSUPP;
	264	}
	265
67cf5b09 TM	266	static inline int ext4_find_inline_data_nolock(struct inode *inode)
	267	{
	268	return 0;
	269	}
	270
	271	static inline int ext4_has_inline_data(struct inode *inode)
	272	{
	273	return 0;
	274	}
	275
	276	static inline int ext4_get_inline_size(struct inode *inode)
	277	{
	278	return 0;
	279	}
	280
	281	static inline int ext4_get_max_inline_size(struct inode *inode)
	282	{
	283	return 0;
	284	}
	285
	286	static inline void ext4_write_inline_data(struct inode *inode,
	287	struct ext4_iloc *iloc,
	288	void *buffer, loff_t pos,
	289	unsigned int len)
	290	{
	291	return;
	292	}
	293
	294	static inline int ext4_init_inline_data(handle_t *handle,
	295	struct inode *inode,
	296	unsigned int len)
	297	{
	298	return 0;
	299	}
	300
	301	static inline int ext4_destroy_inline_data(handle_t *handle,
	302	struct inode *inode)
	303	{
	304	return 0;
	305	}
46c7f254 TM	306
	307	static inline int ext4_readpage_inline(struct inode inode, struct page page)
	308	{
	309	return 0;
	310	}
f19d5870 TM	311
	312	static inline int ext4_try_to_write_inline_data(struct address_space *mapping,
	313	struct inode *inode,
	314	loff_t pos, unsigned len,
	315	unsigned flags,
	316	struct page **pagep)
	317	{
	318	return 0;
	319	}
	320
	321	static inline int ext4_write_inline_data_end(struct inode *inode,
	322	loff_t pos, unsigned len,
	323	unsigned copied,
	324	struct page *page)
	325	{
	326	return 0;
	327	}
3fdcfb66 TM	328
	329	static inline struct buffer_head *
	330	ext4_journalled_write_inline_data(struct inode *inode,
	331	unsigned len,
	332	struct page *page)
	333	{
	334	return NULL;
	335	}
9c3569b5 TM	336
	337	static inline int
	338	ext4_da_write_inline_data_begin(struct address_space *mapping,
	339	struct inode *inode,
	340	loff_t pos, unsigned len,
	341	unsigned flags,
	342	struct page **pagep,
	343	void **fsdata)
	344	{
	345	return 0;
	346	}
	347
	348	static inline int ext4_da_write_inline_data_end(struct inode *inode, loff_t pos,
	349	unsigned len, unsigned copied,
	350	struct page *page)
	351	{
	352	return 0;
	353	}
3c47d541 TM	354
	355	static inline int ext4_try_add_inline_entry(handle_t *handle,
	356	struct dentry *dentry,
	357	struct inode *inode)
	358	{
	359	return 0;
	360	}
	361
	362	static inline int ext4_try_create_inline_dir(handle_t *handle,
	363	struct inode *parent,
	364	struct inode *inode)
	365	{
	366	return 0;
	367	}
65d165d9 TM	368	static inline int ext4_read_inline_dir(struct file *filp,
	369	void *dirent, filldir_t filldir,
	370	int *has_inline_data)
	371	{
	372	return 0;
	373	}
e8e948e7 TM	374
	375	static inline struct buffer_head *
	376	ext4_find_inline_entry(struct inode *dir,
	377	const struct qstr *d_name,
	378	struct ext4_dir_entry_2 **res_dir,
	379	int *has_inline_data)
	380	{
	381	return NULL;
	382	}
9f40fe54 TM	383	static inline int ext4_delete_inline_entry(handle_t *handle,
	384	struct inode *dir,
	385	struct ext4_dir_entry_2 *de_del,
	386	struct buffer_head *bh,
	387	int *has_inline_data)
	388	{
	389	return 0;
	390	}
61f86638 TM	391
	392	static inline int empty_inline_dir(struct inode dir, int has_inline_data)
	393	{
	394	return 0;
	395	}
32f7f22c TM	396
	397	static inline struct buffer_head *
	398	ext4_get_first_inline_block(struct inode *inode,
	399	struct ext4_dir_entry_2 **parent_de,
	400	int *retval)
	401	{
	402	return NULL;
	403	}
94191985 TM	404
	405	static inline int ext4_inline_data_fiemap(struct inode *inode,
	406	struct fiemap_extent_info *fieinfo,
	407	int *has_inline)
	408	{
	409	return 0;
	410	}
03010a33	411	# endif /* CONFIG_EXT4_FS_XATTR */
ac27a0ec	412
03010a33	413	#ifdef CONFIG_EXT4_FS_SECURITY
617ba13b	414	extern int ext4_init_security(handle_t handle, struct inode inode,
2a7dba39	415	struct inode dir, const struct qstr qstr);
ac27a0ec	416	#else
617ba13b	417	static inline int ext4_init_security(handle_t handle, struct inode inode,
2a7dba39	418	struct inode dir, const struct qstr qstr)
ac27a0ec DK	419	{
	420	return 0;
	421	}
	422	#endif