2 * Copyright (C) International Business Machines Corp., 2000-2004
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
12 * the GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 * basic type/utility definitions
26 * note: this header file must be the 1st include file
27 * of JFS include list in all JFS .c file.
30 #include <linux/types.h>
31 #include <linux/nls.h>
36 * transaction and lock id's
38 * Don't change these without carefully considering the impact on the
39 * size and alignment of all of the linelock variants
45 * Almost identical to Linux's timespec, but not quite
56 #define LEFTMOSTONE 0x80000000
57 #define HIGHORDER 0x80000000u /* high order bit on */
58 #define ONES 0xffffffffu /* all bit on */
69 /* xd_t field construction */
71 #define PXDlength(pxd, length32) ((pxd)->len = __cpu_to_le24(length32))
72 #define PXDaddress(pxd, address64)\
74 (pxd)->addr1 = ((s64)address64) >> 32;\
75 (pxd)->addr2 = __cpu_to_le32((address64) & 0xffffffff);\
78 /* xd_t field extraction */
79 #define lengthPXD(pxd) __le24_to_cpu((pxd)->len)
80 #define addressPXD(pxd)\
81 ( ((s64)((pxd)->addr1)) << 32 | __le32_to_cpu((pxd)->addr2))
83 #define MAXTREEHEIGHT 8
88 pxd_t pxd
[MAXTREEHEIGHT
];
93 * data extent descriptor (dxd)
96 unsigned flag
:8; /* 1: flags */
98 __le32 size
; /* 4: size in byte */
99 unsigned len
:24; /* 3: length in unit of fsblksize */
100 unsigned addr1
:8; /* 1: address in unit of fsblksize */
101 __le32 addr2
; /* 4: address in unit of fsblksize */
102 } dxd_t
; /* - 16 - */
105 #define DXD_INDEX 0x80 /* B+-tree index */
106 #define DXD_INLINE 0x40 /* in-line data extent */
107 #define DXD_EXTENT 0x20 /* out-of-line single extent */
108 #define DXD_FILE 0x10 /* out-of-line file (inode) */
109 #define DXD_CORRUPT 0x08 /* Inconsistency detected */
111 /* dxd_t field construction
112 * Conveniently, the PXD macros work for DXD
114 #define DXDlength PXDlength
115 #define DXDaddress PXDaddress
116 #define lengthDXD lengthPXD
117 #define addressDXD addressPXD
118 #define DXDsize(dxd, size32) ((dxd)->size = cpu_to_le32(size32))
119 #define sizeDXD(dxd) le32_to_cpu((dxd)->size)
122 * directory entry argument
124 struct component_name
{
131 * DASD limit information - stored in directory inode
134 u8 thresh
; /* Alert Threshold (in percent) */
135 u8 delta
; /* Alert Threshold delta (in percent) */
137 u8 limit_hi
; /* DASD limit (in logical blocks) */
138 __le32 limit_lo
; /* DASD limit (in logical blocks) */
140 u8 used_hi
; /* DASD usage (in logical blocks) */
141 __le32 used_lo
; /* DASD usage (in logical blocks) */
144 #define DASDLIMIT(dasdp) \
145 (((u64)((dasdp)->limit_hi) << 32) + __le32_to_cpu((dasdp)->limit_lo))
146 #define setDASDLIMIT(dasdp, limit)\
148 (dasdp)->limit_hi = ((u64)limit) >> 32;\
149 (dasdp)->limit_lo = __cpu_to_le32(limit);\
151 #define DASDUSED(dasdp) \
152 (((u64)((dasdp)->used_hi) << 32) + __le32_to_cpu((dasdp)->used_lo))
153 #define setDASDUSED(dasdp, used)\
155 (dasdp)->used_hi = ((u64)used) >> 32;\
156 (dasdp)->used_lo = __cpu_to_le32(used);\
159 #endif /* !_H_JFS_TYPES */
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