xattr.h File Reference

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Data Structures
struct	gfs2_ea_request
struct	gfs2_ea_location

Macros
#define	GFS2_EA_REC_LEN(ea)   be32_to_cpu((ea)->ea_rec_len)
#define	GFS2_EA_DATA_LEN(ea)   be32_to_cpu((ea)->ea_data_len)
#define	GFS2_EA_SIZE(ea)
#define	GFS2_EA_IS_STUFFED(ea)   (!(ea)->ea_num_ptrs)
#define	GFS2_EA_IS_LAST(ea)   ((ea)->ea_flags & GFS2_EAFLAG_LAST)
#define	GFS2_EAREQ_SIZE_STUFFED(er)   ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + (er)->er_data_len, 8)
#define	GFS2_EA2NAME(ea)   ((char *)((struct gfs2_ea_header *)(ea) + 1))
#define	GFS2_EA2DATA(ea)   (GFS2_EA2NAME(ea) + (ea)->ea_name_len)
#define	GFS2_EA2DATAPTRS(ea)   ((__be64 *)(GFS2_EA2NAME(ea) + ALIGN((ea)->ea_name_len, 8)))
#define	GFS2_EA2NEXT(ea)   ((struct gfs2_ea_header *)((char *)(ea) + GFS2_EA_REC_LEN(ea)))
#define	GFS2_EA_BH2FIRST(bh)   ((struct gfs2_ea_header *)((bh)->b_data + sizeof(struct gfs2_meta_header)))

Functions
int	__gfs2_xattr_set (struct inode *inode, const char *name, const void *value, size_t size, int flags, int type)
ssize_t	gfs2_listxattr (struct dentry *dentry, char *buffer, size_t size)
int	gfs2_ea_dealloc (struct gfs2_inode *ip)
int	gfs2_xattr_acl_get (struct gfs2_inode *ip, const char *name, char **data)
int	gfs2_xattr_acl_chmod (struct gfs2_inode *ip, struct iattr *attr, char *data)

Macro Definition Documentation

#define GFS2_EA2DATA

(

ea

)

(GFS2_EA2NAME(ea) + (ea)->ea_name_len)

Definition at line 31 of file xattr.h.

#define GFS2_EA2DATAPTRS

(

ea

)

((__be64 *)(GFS2_EA2NAME(ea) + ALIGN((ea)->ea_name_len, 8)))

Definition at line 33 of file xattr.h.

#define GFS2_EA2NAME

(

ea

)

((char *)((struct gfs2_ea_header *)(ea) + 1))

Definition at line 30 of file xattr.h.

#define GFS2_EA2NEXT

(

ea

)

((struct gfs2_ea_header *)((char *)(ea) + GFS2_EA_REC_LEN(ea)))

Definition at line 36 of file xattr.h.

#define GFS2_EA_BH2FIRST

(

bh

)

((struct gfs2_ea_header *)((bh)->b_data + sizeof(struct gfs2_meta_header)))

Definition at line 39 of file xattr.h.

#define GFS2_EA_DATA_LEN

(

ea

)

be32_to_cpu((ea)->ea_data_len)

Definition at line 17 of file xattr.h.

#define GFS2_EA_IS_LAST

(

ea

)

((ea)->ea_flags & GFS2_EAFLAG_LAST)

Definition at line 25 of file xattr.h.

#define GFS2_EA_IS_STUFFED

(

ea

)

(!(ea)->ea_num_ptrs)

Definition at line 24 of file xattr.h.

#define GFS2_EA_REC_LEN

(

ea

)

be32_to_cpu((ea)->ea_rec_len)

Definition at line 16 of file xattr.h.

#define GFS2_EA_SIZE

(

ea

)

Value:

ALIGN(sizeof(struct gfs2_ea_header) + (ea)->ea_name_len + \
      ((GFS2_EA_IS_STUFFED(ea)) ? GFS2_EA_DATA_LEN(ea) : \
                  (sizeof(__be64) * (ea)->ea_num_ptrs)), 8)

Definition at line 19 of file xattr.h.

#define GFS2_EAREQ_SIZE_STUFFED

(

er

)

ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + (er)->er_data_len, 8)

Definition at line 27 of file xattr.h.

Function Documentation

int __gfs2_xattr_set	(	struct inode *	inode,
		const char *	name,
		const void *	value,
		size_t	size,
		int	flags,
		int	type
	)

Definition at line 1173 of file xattr.c.

int gfs2_ea_dealloc

(

struct gfs2_inode *

ip

)

gfs2_ea_dealloc - deallocate the extended attribute fork : the inode

Returns: errno

Definition at line 1456 of file xattr.c.

ssize_t gfs2_listxattr	(	struct dentry *	dentry,
		char *	buffer,
		size_t	size
	)

gfs2_listxattr - List gfs2 extended attributes : The dentry whose inode we are interested in : The buffer to write the results : The size of the buffer

Returns: actual size of data on success, -errno on error

Definition at line 420 of file xattr.c.

int gfs2_xattr_acl_chmod	(	struct gfs2_inode *	ip,
		struct iattr *	attr,
		char *	data
	)

Definition at line 1254 of file xattr.c.

int gfs2_xattr_acl_get	(	struct gfs2_inode *	ip,
		const char *	name,
		char **	data
	)

Definition at line 544 of file xattr.c.