Release 4.10 fs/gfs2/xattr.h

/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU General Public License version 2.
 */

#ifndef __EATTR_DOT_H__

#define __EATTR_DOT_H__

struct gfs2_inode;
struct iattr;


#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) \
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)


#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)))


struct gfs2_ea_request {
	
const char *er_name;
	
char *er_data;
	
unsigned int er_name_len;
	
unsigned int er_data_len;
	
unsigned int er_type; /* GFS2_EATYPE_... */
};


struct gfs2_ea_location {
	
struct buffer_head *el_bh;
	
struct gfs2_ea_header *el_ea;
	
struct gfs2_ea_header *el_prev;
};

extern int __gfs2_xattr_set(struct inode *inode, const char *name,
			    const void *value, size_t size,
			    int flags, int type);
extern ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size);
extern int gfs2_ea_dealloc(struct gfs2_inode *ip);

/* Exported to acl.c */

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

#endif /* __EATTR_DOT_H__ */
Overall Contributors
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david teigland
david teigland
176
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1
11.11%
steven whitehouse
steven whitehouse
41
18.47%
6
66.67%
christoph hellwig
christoph hellwig
4
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al viro
al viro
1
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Directory: fs/gfs2

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