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