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