1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
4 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
5 | */ |
6 | |
7 | #ifndef __EATTR_DOT_H__ |
8 | #define __EATTR_DOT_H__ |
9 | |
10 | struct gfs2_inode; |
11 | struct iattr; |
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(__be64) * (ea)->ea_num_ptrs)), 8) |
20 | |
21 | #define GFS2_EA_IS_STUFFED(ea) (!(ea)->ea_num_ptrs) |
22 | #define GFS2_EA_IS_LAST(ea) ((ea)->ea_flags & GFS2_EAFLAG_LAST) |
23 | |
24 | #define GFS2_EAREQ_SIZE_STUFFED(er) \ |
25 | ALIGN(sizeof(struct gfs2_ea_header) + (er)->er_name_len + (er)->er_data_len, 8) |
26 | |
27 | #define GFS2_EA2NAME(ea) ((char *)((struct gfs2_ea_header *)(ea) + 1)) |
28 | #define GFS2_EA2DATA(ea) (GFS2_EA2NAME(ea) + (ea)->ea_name_len) |
29 | |
30 | #define GFS2_EA2DATAPTRS(ea) \ |
31 | ((__be64 *)(GFS2_EA2NAME(ea) + ALIGN((ea)->ea_name_len, 8))) |
32 | |
33 | #define GFS2_EA2NEXT(ea) \ |
34 | ((struct gfs2_ea_header *)((char *)(ea) + GFS2_EA_REC_LEN(ea))) |
35 | |
36 | #define GFS2_EA_BH2FIRST(bh) \ |
37 | ((struct gfs2_ea_header *)((bh)->b_data + sizeof(struct gfs2_meta_header))) |
38 | |
39 | struct gfs2_ea_request { |
40 | const char *er_name; |
41 | char *er_data; |
42 | unsigned int er_name_len; |
43 | unsigned int er_data_len; |
44 | unsigned int er_type; /* GFS2_EATYPE_... */ |
45 | }; |
46 | |
47 | struct gfs2_ea_location { |
48 | struct buffer_head *el_bh; |
49 | struct gfs2_ea_header *el_ea; |
50 | struct gfs2_ea_header *el_prev; |
51 | }; |
52 | |
53 | int __gfs2_xattr_set(struct inode *inode, const char *name, |
54 | const void *value, size_t size, |
55 | int flags, int type); |
56 | ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size); |
57 | int gfs2_ea_dealloc(struct gfs2_inode *ip); |
58 | |
59 | /* Exported to acl.c */ |
60 | |
61 | int gfs2_xattr_acl_get(struct gfs2_inode *ip, const char *name, char **data); |
62 | |
63 | #endif /* __EATTR_DOT_H__ */ |
64 | |