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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - fs/jfs/jfs_types.h
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 */
60 typedef int boolean_t
;
73 /* lxd_t field construction */
74 #define LXDlength(lxd, length32) ( (lxd)->len = length32 )
75 #define LXDoffset(lxd, offset64)\
77 (lxd)->off1 = ((s64)offset64) >> 32;\
78 (lxd)->off2 = (offset64) & 0xffffffff;\
81 /* lxd_t field extraction */
82 #define lengthLXD(lxd) ( (lxd)->len )
83 #define offsetLXD(lxd)\
84 ( ((s64)((lxd)->off1)) << 32 | (lxd)->off2 )
102 /* xd_t field construction */
104 #define PXDlength(pxd, length32) ((pxd)->len = __cpu_to_le24(length32))
105 #define PXDaddress(pxd, address64)\
107 (pxd)->addr1 = ((s64)address64) >> 32;\
108 (pxd)->addr2 = __cpu_to_le32((address64) & 0xffffffff);\
111 /* xd_t field extraction */
112 #define lengthPXD(pxd) __le24_to_cpu((pxd)->len)
113 #define addressPXD(pxd)\
114 ( ((s64)((pxd)->addr1)) << 32 | __le32_to_cpu((pxd)->addr2))
116 #define MAXTREEHEIGHT 8
121 pxd_t pxd
[MAXTREEHEIGHT
];
126 * data extent descriptor (dxd)
129 unsigned flag
:8; /* 1: flags */
131 __le32 size
; /* 4: size in byte */
132 unsigned len
:24; /* 3: length in unit of fsblksize */
133 unsigned addr1
:8; /* 1: address in unit of fsblksize */
134 __le32 addr2
; /* 4: address in unit of fsblksize */
135 } dxd_t
; /* - 16 - */
138 #define DXD_INDEX 0x80 /* B+-tree index */
139 #define DXD_INLINE 0x40 /* in-line data extent */
140 #define DXD_EXTENT 0x20 /* out-of-line single extent */
141 #define DXD_FILE 0x10 /* out-of-line file (inode) */
142 #define DXD_CORRUPT 0x08 /* Inconsistency detected */
144 /* dxd_t field construction
145 * Conveniently, the PXD macros work for DXD
147 #define DXDlength PXDlength
148 #define DXDaddress PXDaddress
149 #define lengthDXD lengthPXD
150 #define addressDXD addressPXD
151 #define DXDsize(dxd, size32) ((dxd)->size = cpu_to_le32(size32))
152 #define sizeDXD(dxd) le32_to_cpu((dxd)->size)
155 * directory entry argument
157 struct component_name
{
164 * DASD limit information - stored in directory inode
167 u8 thresh
; /* Alert Threshold (in percent) */
168 u8 delta
; /* Alert Threshold delta (in percent) */
170 u8 limit_hi
; /* DASD limit (in logical blocks) */
171 __le32 limit_lo
; /* DASD limit (in logical blocks) */
173 u8 used_hi
; /* DASD usage (in logical blocks) */
174 __le32 used_lo
; /* DASD usage (in logical blocks) */
177 #define DASDLIMIT(dasdp) \
178 (((u64)((dasdp)->limit_hi) << 32) + __le32_to_cpu((dasdp)->limit_lo))
179 #define setDASDLIMIT(dasdp, limit)\
181 (dasdp)->limit_hi = ((u64)limit) >> 32;\
182 (dasdp)->limit_lo = __cpu_to_le32(limit);\
184 #define DASDUSED(dasdp) \
185 (((u64)((dasdp)->used_hi) << 32) + __le32_to_cpu((dasdp)->used_lo))
186 #define setDASDUSED(dasdp, used)\
188 (dasdp)->used_hi = ((u64)used) >> 32;\
189 (dasdp)->used_lo = __cpu_to_le32(used);\
192 #endif /* !_H_JFS_TYPES */