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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3 | * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. | |
4 | * | |
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 v.2. | |
8 | */ | |
9 | ||
10 | #ifndef __EATTR_DOT_H__ | |
11 | #define __EATTR_DOT_H__ | |
12 | ||
13 | #define GFS2_EA_REC_LEN(ea) be32_to_cpu((ea)->ea_rec_len) | |
14 | #define GFS2_EA_DATA_LEN(ea) be32_to_cpu((ea)->ea_data_len) | |
15 | ||
16 | #define GFS2_EA_SIZE(ea) \ | |
17 | ALIGN(sizeof(struct gfs2_ea_header) + (ea)->ea_name_len + \ | |
18 | ((GFS2_EA_IS_STUFFED(ea)) ? GFS2_EA_DATA_LEN(ea) : \ | |
19 | (sizeof(uint64_t) * (ea)->ea_num_ptrs)), 8) | |
20 | ||
21 | #define GFS2_EA_STRLEN(ea) \ | |
22 | ((((ea)->ea_type == GFS2_EATYPE_USR) ? 5 : 7) + (ea)->ea_name_len + 1) | |
23 | ||
24 | #define GFS2_EA_IS_STUFFED(ea) (!(ea)->ea_num_ptrs) | |
25 | #define GFS2_EA_IS_LAST(ea) ((ea)->ea_flags & GFS2_EAFLAG_LAST) | |
26 | ||
27 | #define GFS2_EAREQ_SIZE_STUFFED(er) \ | |
28 | ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + (er)->er_data_len, 8) | |
29 | ||
30 | #define GFS2_EAREQ_SIZE_UNSTUFFED(sdp, er) \ | |
31 | ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + \ | |
5c676f6d | 32 | sizeof(uint64_t) * DIV_ROUND_UP((er)->er_data_len, (sdp)->sd_jbsize), 8) |
b3b94faa DT |
33 | |
34 | #define GFS2_EA2NAME(ea) ((char *)((struct gfs2_ea_header *)(ea) + 1)) | |
35 | #define GFS2_EA2DATA(ea) (GFS2_EA2NAME(ea) + (ea)->ea_name_len) | |
36 | ||
37 | #define GFS2_EA2DATAPTRS(ea) \ | |
38 | ((uint64_t *)(GFS2_EA2NAME(ea) + ALIGN((ea)->ea_name_len, 8))) | |
39 | ||
40 | #define GFS2_EA2NEXT(ea) \ | |
41 | ((struct gfs2_ea_header *)((char *)(ea) + GFS2_EA_REC_LEN(ea))) | |
42 | ||
43 | #define GFS2_EA_BH2FIRST(bh) \ | |
44 | ((struct gfs2_ea_header *)((bh)->b_data + sizeof(struct gfs2_meta_header))) | |
45 | ||
46 | #define GFS2_ERF_MODE 0x80000000 | |
47 | ||
48 | struct gfs2_ea_request { | |
49 | char *er_name; | |
50 | char *er_data; | |
51 | unsigned int er_name_len; | |
52 | unsigned int er_data_len; | |
53 | unsigned int er_type; /* GFS2_EATYPE_... */ | |
54 | int er_flags; | |
55 | mode_t er_mode; | |
56 | }; | |
57 | ||
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; | |
62 | }; | |
63 | ||
64 | int gfs2_ea_repack(struct gfs2_inode *ip); | |
65 | ||
66 | int gfs2_ea_get_i(struct gfs2_inode *ip, struct gfs2_ea_request *er); | |
67 | int gfs2_ea_set_i(struct gfs2_inode *ip, struct gfs2_ea_request *er); | |
68 | int gfs2_ea_remove_i(struct gfs2_inode *ip, struct gfs2_ea_request *er); | |
69 | ||
70 | int gfs2_ea_list(struct gfs2_inode *ip, struct gfs2_ea_request *er); | |
71 | int gfs2_ea_get(struct gfs2_inode *ip, struct gfs2_ea_request *er); | |
72 | int gfs2_ea_set(struct gfs2_inode *ip, struct gfs2_ea_request *er); | |
73 | int gfs2_ea_remove(struct gfs2_inode *ip, struct gfs2_ea_request *er); | |
74 | ||
75 | int gfs2_ea_dealloc(struct gfs2_inode *ip); | |
76 | ||
b3b94faa DT |
77 | /* Exported to acl.c */ |
78 | ||
79 | int gfs2_ea_find(struct gfs2_inode *ip, | |
80 | struct gfs2_ea_request *er, | |
81 | struct gfs2_ea_location *el); | |
82 | int gfs2_ea_get_copy(struct gfs2_inode *ip, | |
83 | struct gfs2_ea_location *el, | |
84 | char *data); | |
85 | int gfs2_ea_acl_chmod(struct gfs2_inode *ip, struct gfs2_ea_location *el, | |
86 | struct iattr *attr, char *data); | |
87 | ||
88 | #endif /* __EATTR_DOT_H__ */ |