| 1 |
62 |
marcus.erl |
/*
|
| 2 |
|
|
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
|
| 3 |
|
|
* Copyright (C) 2004-2006 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 version 2.
|
| 8 |
|
|
*/
|
| 9 |
|
|
|
| 10 |
|
|
#ifndef __EATTR_DOT_H__
|
| 11 |
|
|
#define __EATTR_DOT_H__
|
| 12 |
|
|
|
| 13 |
|
|
struct gfs2_inode;
|
| 14 |
|
|
struct iattr;
|
| 15 |
|
|
|
| 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)
|
| 18 |
|
|
|
| 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)
|
| 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(__be64) * DIV_ROUND_UP((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 |
|
|
((__be64 *)(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 |
|
|
const 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_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 |
|
|
|
| 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 |
|
|
static inline unsigned int gfs2_ea_strlen(struct gfs2_ea_header *ea)
|
| 87 |
|
|
{
|
| 88 |
|
|
switch (ea->ea_type) {
|
| 89 |
|
|
case GFS2_EATYPE_USR:
|
| 90 |
|
|
return 5 + ea->ea_name_len + 1;
|
| 91 |
|
|
case GFS2_EATYPE_SYS:
|
| 92 |
|
|
return 7 + ea->ea_name_len + 1;
|
| 93 |
|
|
case GFS2_EATYPE_SECURITY:
|
| 94 |
|
|
return 9 + ea->ea_name_len + 1;
|
| 95 |
|
|
default:
|
| 96 |
|
|
return 0;
|
| 97 |
|
|
}
|
| 98 |
|
|
}
|
| 99 |
|
|
|
| 100 |
|
|
#endif /* __EATTR_DOT_H__ */
|
