2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
10 #ifndef __EATTR_DOT_H__
11 #define __EATTR_DOT_H__
16 #define GFS2_EA_REC_LEN(ea) be32_to_cpu((ea)->ea_rec_len)
17 #define GFS2_EA_DATA_LEN(ea) be32_to_cpu((ea)->ea_data_len)
19 #define GFS2_EA_SIZE(ea) \
20 ALIGN(sizeof(struct gfs2_ea_header) + (ea)->ea_name_len + \
21 ((GFS2_EA_IS_STUFFED(ea)) ? GFS2_EA_DATA_LEN(ea) : \
22 (sizeof(__be64) * (ea)->ea_num_ptrs)), 8)
24 #define GFS2_EA_IS_STUFFED(ea) (!(ea)->ea_num_ptrs)
25 #define GFS2_EA_IS_LAST(ea) ((ea)->ea_flags & GFS2_EAFLAG_LAST)
27 #define GFS2_EAREQ_SIZE_STUFFED(er) \
28 ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + (er)->er_data_len, 8)
30 #define GFS2_EAREQ_SIZE_UNSTUFFED(sdp, er) \
31 ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + \
32 sizeof(__be64) * DIV_ROUND_UP((er)->er_data_len, (sdp)->sd_jbsize), 8)
34 #define GFS2_EA2NAME(ea) ((char *)((struct gfs2_ea_header *)(ea) + 1))
35 #define GFS2_EA2DATA(ea) (GFS2_EA2NAME(ea) + (ea)->ea_name_len)
37 #define GFS2_EA2DATAPTRS(ea) \
38 ((__be64 *)(GFS2_EA2NAME(ea) + ALIGN((ea)->ea_name_len, 8)))
40 #define GFS2_EA2NEXT(ea) \
41 ((struct gfs2_ea_header *)((char *)(ea) + GFS2_EA_REC_LEN(ea)))
43 #define GFS2_EA_BH2FIRST(bh) \
44 ((struct gfs2_ea_header *)((bh)->b_data + sizeof(struct gfs2_meta_header)))
46 #define GFS2_ERF_MODE 0x80000000
48 struct gfs2_ea_request
{
51 unsigned int er_name_len
;
52 unsigned int er_data_len
;
53 unsigned int er_type
; /* GFS2_EATYPE_... */
58 struct gfs2_ea_location
{
59 struct buffer_head
*el_bh
;
60 struct gfs2_ea_header
*el_ea
;
61 struct gfs2_ea_header
*el_prev
;
64 int gfs2_ea_get_i(struct gfs2_inode
*ip
, struct gfs2_ea_request
*er
);
65 int gfs2_ea_set_i(struct gfs2_inode
*ip
, struct gfs2_ea_request
*er
);
66 int gfs2_ea_remove_i(struct gfs2_inode
*ip
, struct gfs2_ea_request
*er
);
68 int gfs2_ea_list(struct gfs2_inode
*ip
, struct gfs2_ea_request
*er
);
69 int gfs2_ea_get(struct gfs2_inode
*ip
, struct gfs2_ea_request
*er
);
70 int gfs2_ea_set(struct gfs2_inode
*ip
, struct gfs2_ea_request
*er
);
71 int gfs2_ea_remove(struct gfs2_inode
*ip
, struct gfs2_ea_request
*er
);
73 int gfs2_ea_dealloc(struct gfs2_inode
*ip
);
75 /* Exported to acl.c */
77 int gfs2_ea_find(struct gfs2_inode
*ip
,
78 struct gfs2_ea_request
*er
,
79 struct gfs2_ea_location
*el
);
80 int gfs2_ea_get_copy(struct gfs2_inode
*ip
,
81 struct gfs2_ea_location
*el
,
83 int gfs2_ea_acl_chmod(struct gfs2_inode
*ip
, struct gfs2_ea_location
*el
,
84 struct iattr
*attr
, char *data
);
86 static inline unsigned int gfs2_ea_strlen(struct gfs2_ea_header
*ea
)
88 switch (ea
->ea_type
) {
90 return 5 + ea
->ea_name_len
+ 1;
92 return 7 + ea
->ea_name_len
+ 1;
93 case GFS2_EATYPE_SECURITY
:
94 return 9 + ea
->ea_name_len
+ 1;
100 #endif /* __EATTR_DOT_H__ */
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