Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | /* * Copyright (C) International Business Machines Corp., 2000-2004 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See * the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifndef _H_JFS_TYPES #define _H_JFS_TYPES /* * jfs_types.h: * * basic type/utility definitions * * note: this header file must be the 1st include file * of JFS include list in all JFS .c file. */ #include <linux/types.h> #include <linux/nls.h> #include "endian24.h" /* * transaction and lock id's * * Don't change these without carefully considering the impact on the * size and alignment of all of the linelock variants */ typedef u16 tid_t; typedef u16 lid_t; /* * Almost identical to Linux's timespec, but not quite */ struct timestruc_t { __le32 tv_sec; __le32 tv_nsec; }; /* * handy */ #define LEFTMOSTONE 0x80000000 #define HIGHORDER 0x80000000u /* high order bit on */ #define ONES 0xffffffffu /* all bit on */ /* * physical xd (pxd) */ typedef struct { unsigned len:24; unsigned addr1:8; __le32 addr2; } pxd_t; /* xd_t field construction */ #define PXDlength(pxd, length32) ((pxd)->len = __cpu_to_le24(length32)) #define PXDaddress(pxd, address64)\ {\ (pxd)->addr1 = ((s64)address64) >> 32;\ (pxd)->addr2 = __cpu_to_le32((address64) & 0xffffffff);\ } /* xd_t field extraction */ #define lengthPXD(pxd) __le24_to_cpu((pxd)->len) #define addressPXD(pxd)\ ( ((s64)((pxd)->addr1)) << 32 | __le32_to_cpu((pxd)->addr2)) #define MAXTREEHEIGHT 8 /* pxd list */ struct pxdlist { s16 maxnpxd; s16 npxd; pxd_t pxd[MAXTREEHEIGHT]; }; /* * data extent descriptor (dxd) */ typedef struct { unsigned flag:8; /* 1: flags */ unsigned rsrvd:24; __le32 size; /* 4: size in byte */ unsigned len:24; /* 3: length in unit of fsblksize */ unsigned addr1:8; /* 1: address in unit of fsblksize */ __le32 addr2; /* 4: address in unit of fsblksize */ } dxd_t; /* - 16 - */ /* dxd_t flags */ #define DXD_INDEX 0x80 /* B+-tree index */ #define DXD_INLINE 0x40 /* in-line data extent */ #define DXD_EXTENT 0x20 /* out-of-line single extent */ #define DXD_FILE 0x10 /* out-of-line file (inode) */ #define DXD_CORRUPT 0x08 /* Inconsistency detected */ /* dxd_t field construction * Conveniently, the PXD macros work for DXD */ #define DXDlength PXDlength #define DXDaddress PXDaddress #define lengthDXD lengthPXD #define addressDXD addressPXD #define DXDsize(dxd, size32) ((dxd)->size = cpu_to_le32(size32)) #define sizeDXD(dxd) le32_to_cpu((dxd)->size) /* * directory entry argument */ struct component_name { int namlen; wchar_t *name; }; /* * DASD limit information - stored in directory inode */ struct dasd { u8 thresh; /* Alert Threshold (in percent) */ u8 delta; /* Alert Threshold delta (in percent) */ u8 rsrvd1; u8 limit_hi; /* DASD limit (in logical blocks) */ __le32 limit_lo; /* DASD limit (in logical blocks) */ u8 rsrvd2[3]; u8 used_hi; /* DASD usage (in logical blocks) */ __le32 used_lo; /* DASD usage (in logical blocks) */ }; #define DASDLIMIT(dasdp) \ (((u64)((dasdp)->limit_hi) << 32) + __le32_to_cpu((dasdp)->limit_lo)) #define setDASDLIMIT(dasdp, limit)\ {\ (dasdp)->limit_hi = ((u64)limit) >> 32;\ (dasdp)->limit_lo = __cpu_to_le32(limit);\ } #define DASDUSED(dasdp) \ (((u64)((dasdp)->used_hi) << 32) + __le32_to_cpu((dasdp)->used_lo)) #define setDASDUSED(dasdp, used)\ {\ (dasdp)->used_hi = ((u64)used) >> 32;\ (dasdp)->used_lo = __cpu_to_le32(used);\ } #endif /* !_H_JFS_TYPES */ |