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>
34 * transaction and lock id's
36 * Don't change these without carefully considering the impact on the
37 * size and alignment of all of the linelock variants
43 * Almost identical to Linux's timespec, but not quite
54 #define LEFTMOSTONE 0x80000000
55 #define HIGHORDER 0x80000000u /* high order bit on */
56 #define ONES 0xffffffffu /* all bit on */
58 typedef int boolean_t;
71 /* lxd_t field construction */
72 #define LXDlength(lxd, length32) ( (lxd)->len = length32 )
73 #define LXDoffset(lxd, offset64)\
75 (lxd)->off1 = ((s64)offset64) >> 32;\
76 (lxd)->off2 = (offset64) & 0xffffffff;\
79 /* lxd_t field extraction */
80 #define lengthLXD(lxd) ( (lxd)->len )
81 #define offsetLXD(lxd)\
82 ( ((s64)((lxd)->off1)) << 32 | (lxd)->off2 )
100 /* xd_t field construction */
102 #define PXDlength(pxd, length32) ((pxd)->len = __cpu_to_le24(length32))
103 #define PXDaddress(pxd, address64)\
105 (pxd)->addr1 = ((s64)address64) >> 32;\
106 (pxd)->addr2 = __cpu_to_le32((address64) & 0xffffffff);\
109 /* xd_t field extraction */
110 #define lengthPXD(pxd) __le24_to_cpu((pxd)->len)
111 #define addressPXD(pxd)\
112 ( ((s64)((pxd)->addr1)) << 32 | __le32_to_cpu((pxd)->addr2))
114 #define MAXTREEHEIGHT 8
119 pxd_t pxd[MAXTREEHEIGHT];
124 * data extent descriptor (dxd)
127 unsigned flag:8; /* 1: flags */
128 unsigned rsrvd:24; /* 3: */
129 u32 size; /* 4: size in byte */
130 unsigned len:24; /* 3: length in unit of fsblksize */
131 unsigned addr1:8; /* 1: address in unit of fsblksize */
132 u32 addr2; /* 4: address in unit of fsblksize */
133 } dxd_t; /* - 16 - */
136 #define DXD_INDEX 0x80 /* B+-tree index */
137 #define DXD_INLINE 0x40 /* in-line data extent */
138 #define DXD_EXTENT 0x20 /* out-of-line single extent */
139 #define DXD_FILE 0x10 /* out-of-line file (inode) */
140 #define DXD_CORRUPT 0x08 /* Inconsistency detected */
142 /* dxd_t field construction
143 * Conveniently, the PXD macros work for DXD
145 #define DXDlength PXDlength
146 #define DXDaddress PXDaddress
147 #define lengthDXD lengthPXD
148 #define addressDXD addressPXD
149 #define DXDsize(dxd, size32) ((dxd)->size = cpu_to_le32(size32))
150 #define sizeDXD(dxd) le32_to_cpu((dxd)->size)
153 * directory entry argument
155 struct component_name {
162 * DASD limit information - stored in directory inode
165 u8 thresh; /* Alert Threshold (in percent) */
166 u8 delta; /* Alert Threshold delta (in percent) */
168 u8 limit_hi; /* DASD limit (in logical blocks) */
169 u32 limit_lo; /* DASD limit (in logical blocks) */
171 u8 used_hi; /* DASD usage (in logical blocks) */
172 u32 used_lo; /* DASD usage (in logical blocks) */
175 #define DASDLIMIT(dasdp) \
176 (((u64)((dasdp)->limit_hi) << 32) + __le32_to_cpu((dasdp)->limit_lo))
177 #define setDASDLIMIT(dasdp, limit)\
179 (dasdp)->limit_hi = ((u64)limit) >> 32;\
180 (dasdp)->limit_lo = __cpu_to_le32(limit);\
182 #define DASDUSED(dasdp) \
183 (((u64)((dasdp)->used_hi) << 32) + __le32_to_cpu((dasdp)->used_lo))
184 #define setDASDUSED(dasdp, used)\
186 (dasdp)->used_hi = ((u64)used) >> 32;\
187 (dasdp)->used_lo = __cpu_to_le32(used);\
190 #endif /* !_H_JFS_TYPES */