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 | */ |
26 | typedef u16 tid_t; |
27 | typedef u16 lid_t; |
28 | |
29 | /* |
30 | * Almost identical to Linux's timespec, but not quite |
31 | */ |
32 | struct 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 | */ |
52 | typedef struct { |
53 | __le32 len_addr; |
54 | __le32 addr2; |
55 | } pxd_t; |
56 | |
57 | /* xd_t field construction */ |
58 | |
59 | static 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 | |
65 | static 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 */ |
73 | static inline __u32 lengthPXD(pxd_t *pxd) |
74 | { |
75 | return le32_to_cpu((pxd)->len_addr) & 0xffffff; |
76 | } |
77 | |
78 | static 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 */ |
86 | struct pxdlist { |
87 | s16 maxnpxd; |
88 | s16 npxd; |
89 | pxd_t pxd[MAXTREEHEIGHT]; |
90 | }; |
91 | |
92 | |
93 | /* |
94 | * data extent descriptor (dxd) |
95 | */ |
96 | typedef 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 | */ |
122 | struct component_name { |
123 | int namlen; |
124 | wchar_t *name; |
125 | }; |
126 | |
127 | |
128 | /* |
129 | * DASD limit information - stored in directory inode |
130 | */ |
131 | struct 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 */ |
158 | |