--- /dev/null
+/*
+ * 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>
+
+/*
+ * 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)
+ *
+ * The leftmost 24 bits of len_addr are the extent length.
+ * The rightmost 8 bits of len_addr are the most signficant bits of
+ * the extent address
+ */
+typedef struct {
+ __le32 len_addr;
+ __le32 addr2;
+} pxd_t;
+
+/* xd_t field construction */
+
+static inline void PXDlength(pxd_t *pxd, __u32 len)
+{
+ pxd->len_addr = (pxd->len_addr & cpu_to_le32(~0xffffff)) |
+ cpu_to_le32(len & 0xffffff);
+}
+
+static inline void PXDaddress(pxd_t *pxd, __u64 addr)
+{
+ pxd->len_addr = (pxd->len_addr & cpu_to_le32(0xffffff)) |
+ cpu_to_le32((addr >> 32)<<24);
+ pxd->addr2 = cpu_to_le32(addr & 0xffffffff);
+}
+
+/* xd_t field extraction */
+static inline __u32 lengthPXD(pxd_t *pxd)
+{
+ return le32_to_cpu((pxd)->len_addr) & 0xffffff;
+}
+
+static inline __u64 addressPXD(pxd_t *pxd)
+{
+ __u64 n = le32_to_cpu(pxd->len_addr) & ~0xffffff;
+ return (n << 8) + 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 {
+ __u8 flag; /* 1: flags */
+ __u8 rsrvd[3];
+ __le32 size; /* 4: size in byte */
+ pxd_t loc; /* 8: address and length 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
+ */
+#define DXDlength(dxd, len) PXDlength(&(dxd)->loc, len)
+#define DXDaddress(dxd, addr) PXDaddress(&(dxd)->loc, addr)
+#define lengthDXD(dxd) lengthPXD(&(dxd)->loc)
+#define addressDXD(dxd) addressPXD(&(dxd)->loc)
+#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 */
Code Review / kvmfornfv.git / blobdiff