blob: 3ff9f26bc3e60c2a3a84819cee5578b792444a2c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) International Business Machines Corp., 2000-2004
*/
#ifndef _H_JFS_TYPES
#define _H_JFS_TYPES
/*
* jfs_types.h:
*
* basic type/utility definitions
*
* note: this header file must be the 1st include file
* of JFS include list in all JFS .c file.
*/
#include <linux/types.h>
#include <linux/nls.h>
/*
* transaction and lock id's
*
* Don't change these without carefully considering the impact on the
* size and alignment of all of the linelock variants
*/
typedef u16 tid_t;
typedef u16 lid_t;
/*
* Almost identical to Linux's timespec, but not quite
*/
struct timestruc_t {
__le32 tv_sec;
__le32 tv_nsec;
};
/*
* handy
*/
#define LEFTMOSTONE 0x80000000
#define HIGHORDER 0x80000000u /* high order bit on */
#define ONES 0xffffffffu /* all bit on */
/*
* physical xd (pxd)
*
* The leftmost 24 bits of len_addr are the extent length.
* The rightmost 8 bits of len_addr are the most signficant bits of
* the extent address
*/
typedef struct {
__le32 len_addr;
__le32 addr2;
} pxd_t;
/* xd_t field construction */
static inline void PXDlength(pxd_t *pxd, __u32 len)
{
pxd->len_addr = (pxd->len_addr & cpu_to_le32(~0xffffff)) |
cpu_to_le32(len & 0xffffff);
}
static inline void PXDaddress(pxd_t *pxd, __u64 addr)
{
pxd->len_addr = (pxd->len_addr & cpu_to_le32(0xffffff)) |
cpu_to_le32((addr >> 32)<<24);
pxd->addr2 = cpu_to_le32(addr & 0xffffffff);
}
/* xd_t field extraction */
static inline __u32 lengthPXD(pxd_t *pxd)
{
return le32_to_cpu((pxd)->len_addr) & 0xffffff;
}
static inline __u64 addressPXD(pxd_t *pxd)
{
__u64 n = le32_to_cpu(pxd->len_addr) & ~0xffffff;
return (n << 8) + le32_to_cpu(pxd->addr2);
}
#define MAXTREEHEIGHT 8
/* pxd list */
struct pxdlist {
s16 maxnpxd;
s16 npxd;
pxd_t pxd[MAXTREEHEIGHT];
};
/*
* data extent descriptor (dxd)
*/
typedef struct {
__u8 flag; /* 1: flags */
__u8 rsrvd[3];
__le32 size; /* 4: size in byte */
pxd_t loc; /* 8: address and length in unit of fsblksize */
} dxd_t; /* - 16 - */
/* dxd_t flags */
#define DXD_INDEX 0x80 /* B+-tree index */
#define DXD_INLINE 0x40 /* in-line data extent */
#define DXD_EXTENT 0x20 /* out-of-line single extent */
#define DXD_FILE 0x10 /* out-of-line file (inode) */
#define DXD_CORRUPT 0x08 /* Inconsistency detected */
/* dxd_t field construction
*/
#define DXDlength(dxd, len) PXDlength(&(dxd)->loc, len)
#define DXDaddress(dxd, addr) PXDaddress(&(dxd)->loc, addr)
#define lengthDXD(dxd) lengthPXD(&(dxd)->loc)
#define addressDXD(dxd) addressPXD(&(dxd)->loc)
#define DXDsize(dxd, size32) ((dxd)->size = cpu_to_le32(size32))
#define sizeDXD(dxd) le32_to_cpu((dxd)->size)
/*
* directory entry argument
*/
struct component_name {
int namlen;
wchar_t *name;
};
/*
* DASD limit information - stored in directory inode
*/
struct dasd {
u8 thresh; /* Alert Threshold (in percent) */
u8 delta; /* Alert Threshold delta (in percent) */
u8 rsrvd1;
u8 limit_hi; /* DASD limit (in logical blocks) */
__le32 limit_lo; /* DASD limit (in logical blocks) */
u8 rsrvd2[3];
u8 used_hi; /* DASD usage (in logical blocks) */
__le32 used_lo; /* DASD usage (in logical blocks) */
};
#define DASDLIMIT(dasdp) \
(((u64)((dasdp)->limit_hi) << 32) + __le32_to_cpu((dasdp)->limit_lo))
#define setDASDLIMIT(dasdp, limit)\
{\
(dasdp)->limit_hi = ((u64)limit) >> 32;\
(dasdp)->limit_lo = __cpu_to_le32(limit);\
}
#define DASDUSED(dasdp) \
(((u64)((dasdp)->used_hi) << 32) + __le32_to_cpu((dasdp)->used_lo))
#define setDASDUSED(dasdp, used)\
{\
(dasdp)->used_hi = ((u64)used) >> 32;\
(dasdp)->used_lo = __cpu_to_le32(used);\
}
#endif /* !_H_JFS_TYPES */
|
