/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) International Business Machines Corp., 2000-2004
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*/
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#ifndef _H_JFS_TYPES
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#define _H_JFS_TYPES
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/*
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* jfs_types.h:
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*
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* basic type/utility definitions
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*
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* note: this header file must be the 1st include file
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* of JFS include list in all JFS .c file.
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*/
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#include <linux/types.h>
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#include <linux/nls.h>
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/*
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* transaction and lock id's
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*
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* Don't change these without carefully considering the impact on the
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* size and alignment of all of the linelock variants
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*/
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typedef u16 tid_t;
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typedef u16 lid_t;
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/*
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* Almost identical to Linux's timespec, but not quite
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*/
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struct timestruc_t {
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__le32 tv_sec;
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__le32 tv_nsec;
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};
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/*
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* handy
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*/
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#define LEFTMOSTONE 0x80000000
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#define HIGHORDER 0x80000000u /* high order bit on */
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#define ONES 0xffffffffu /* all bit on */
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/*
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* physical xd (pxd)
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*
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* The leftmost 24 bits of len_addr are the extent length.
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* The rightmost 8 bits of len_addr are the most signficant bits of
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* the extent address
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*/
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typedef struct {
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__le32 len_addr;
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__le32 addr2;
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} pxd_t;
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/* xd_t field construction */
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static inline void PXDlength(pxd_t *pxd, __u32 len)
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{
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pxd->len_addr = (pxd->len_addr & cpu_to_le32(~0xffffff)) |
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cpu_to_le32(len & 0xffffff);
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}
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static inline void PXDaddress(pxd_t *pxd, __u64 addr)
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{
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pxd->len_addr = (pxd->len_addr & cpu_to_le32(0xffffff)) |
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cpu_to_le32((addr >> 32)<<24);
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pxd->addr2 = cpu_to_le32(addr & 0xffffffff);
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}
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/* xd_t field extraction */
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static inline __u32 lengthPXD(pxd_t *pxd)
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{
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return le32_to_cpu((pxd)->len_addr) & 0xffffff;
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}
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static inline __u64 addressPXD(pxd_t *pxd)
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{
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__u64 n = le32_to_cpu(pxd->len_addr) & ~0xffffff;
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return (n << 8) + le32_to_cpu(pxd->addr2);
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}
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#define MAXTREEHEIGHT 8
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/* pxd list */
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struct pxdlist {
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s16 maxnpxd;
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s16 npxd;
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pxd_t pxd[MAXTREEHEIGHT];
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};
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/*
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* data extent descriptor (dxd)
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*/
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typedef struct {
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__u8 flag; /* 1: flags */
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__u8 rsrvd[3];
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__le32 size; /* 4: size in byte */
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pxd_t loc; /* 8: address and length in unit of fsblksize */
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} dxd_t; /* - 16 - */
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/* dxd_t flags */
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#define DXD_INDEX 0x80 /* B+-tree index */
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#define DXD_INLINE 0x40 /* in-line data extent */
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#define DXD_EXTENT 0x20 /* out-of-line single extent */
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#define DXD_FILE 0x10 /* out-of-line file (inode) */
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#define DXD_CORRUPT 0x08 /* Inconsistency detected */
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/* dxd_t field construction
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*/
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#define DXDlength(dxd, len) PXDlength(&(dxd)->loc, len)
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#define DXDaddress(dxd, addr) PXDaddress(&(dxd)->loc, addr)
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#define lengthDXD(dxd) lengthPXD(&(dxd)->loc)
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#define addressDXD(dxd) addressPXD(&(dxd)->loc)
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#define DXDsize(dxd, size32) ((dxd)->size = cpu_to_le32(size32))
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#define sizeDXD(dxd) le32_to_cpu((dxd)->size)
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/*
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* directory entry argument
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*/
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struct component_name {
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int namlen;
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wchar_t *name;
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};
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/*
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* DASD limit information - stored in directory inode
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*/
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struct dasd {
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u8 thresh; /* Alert Threshold (in percent) */
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u8 delta; /* Alert Threshold delta (in percent) */
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u8 rsrvd1;
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u8 limit_hi; /* DASD limit (in logical blocks) */
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__le32 limit_lo; /* DASD limit (in logical blocks) */
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u8 rsrvd2[3];
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u8 used_hi; /* DASD usage (in logical blocks) */
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__le32 used_lo; /* DASD usage (in logical blocks) */
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};
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#define DASDLIMIT(dasdp) \
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(((u64)((dasdp)->limit_hi) << 32) + __le32_to_cpu((dasdp)->limit_lo))
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#define setDASDLIMIT(dasdp, limit)\
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{\
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(dasdp)->limit_hi = ((u64)limit) >> 32;\
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(dasdp)->limit_lo = __cpu_to_le32(limit);\
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}
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#define DASDUSED(dasdp) \
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(((u64)((dasdp)->used_hi) << 32) + __le32_to_cpu((dasdp)->used_lo))
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#define setDASDUSED(dasdp, used)\
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{\
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(dasdp)->used_hi = ((u64)used) >> 32;\
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(dasdp)->used_lo = __cpu_to_le32(used);\
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}
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#endif /* !_H_JFS_TYPES */
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