git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 + \ | |
| 32 | sizeof(uint64_t) * DIV_RU((er)->er_data_len, (sdp)->sd_jbsize), 8) | |
| 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 | ||
| 77 | int gfs2_get_eattr_meta(struct gfs2_inode *ip, struct gfs2_user_buffer *ub); | |
| 78 | ||
| 79 | /* Exported to acl.c */ | |
| 80 | ||
| 81 | int gfs2_ea_find(struct gfs2_inode *ip, | |
| 82 | struct gfs2_ea_request *er, | |
| 83 | struct gfs2_ea_location *el); | |
| 84 | int gfs2_ea_get_copy(struct gfs2_inode *ip, | |
| 85 | struct gfs2_ea_location *el, | |
| 86 | char *data); | |
| 87 | int gfs2_ea_acl_chmod(struct gfs2_inode *ip, struct gfs2_ea_location *el, | |
| 88 | struct iattr *attr, char *data); | |
| 89 | ||
| 90 | #endif /* __EATTR_DOT_H__ */ |