David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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 + \ |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 32 | sizeof(uint64_t) * DIV_ROUND_UP((er)->er_data_len, (sdp)->sd_jbsize), 8) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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); |
| 67 | |
| 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); |
| 72 | |
| 73 | int gfs2_ea_dealloc(struct gfs2_inode *ip); |
| 74 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 75 | /* Exported to acl.c */ |
| 76 | |
| 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, |
| 82 | char *data); |
| 83 | int gfs2_ea_acl_chmod(struct gfs2_inode *ip, struct gfs2_ea_location *el, |
| 84 | struct iattr *attr, char *data); |
| 85 | |
| 86 | #endif /* __EATTR_DOT_H__ */ |