--- /dev/null
+/*
+ * Copyright (C) International Business Machines Corp., 2000-2001
+ *
+ * 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_DINODE
+#define _H_JFS_DINODE
+
+/*
+ * jfs_dinode.h: on-disk inode manager
+ */
+
+#define INODESLOTSIZE 128
+#define L2INODESLOTSIZE 7
+#define log2INODESIZE 9 /* log2(bytes per dinode) */
+
+
+/*
+ * on-disk inode : 512 bytes
+ *
+ * note: align 64-bit fields on 8-byte boundary.
+ */
+struct dinode {
+ /*
+ * I. base area (128 bytes)
+ * ------------------------
+ *
+ * define generic/POSIX attributes
+ */
+ __le32 di_inostamp; /* 4: stamp to show inode belongs to fileset */
+ __le32 di_fileset; /* 4: fileset number */
+ __le32 di_number; /* 4: inode number, aka file serial number */
+ __le32 di_gen; /* 4: inode generation number */
+
+ pxd_t di_ixpxd; /* 8: inode extent descriptor */
+
+ __le64 di_size; /* 8: size */
+ __le64 di_nblocks; /* 8: number of blocks allocated */
+
+ __le32 di_nlink; /* 4: number of links to the object */
+
+ __le32 di_uid; /* 4: user id of owner */
+ __le32 di_gid; /* 4: group id of owner */
+
+ __le32 di_mode; /* 4: attribute, format and permission */
+
+ struct timestruc_t di_atime; /* 8: time last data accessed */
+ struct timestruc_t di_ctime; /* 8: time last status changed */
+ struct timestruc_t di_mtime; /* 8: time last data modified */
+ struct timestruc_t di_otime; /* 8: time created */
+
+ dxd_t di_acl; /* 16: acl descriptor */
+
+ dxd_t di_ea; /* 16: ea descriptor */
+
+ __le32 di_next_index; /* 4: Next available dir_table index */
+
+ __le32 di_acltype; /* 4: Type of ACL */
+
+ /*
+ * Extension Areas.
+ *
+ * Historically, the inode was partitioned into 4 128-byte areas,
+ * the last 3 being defined as unions which could have multiple
+ * uses. The first 96 bytes had been completely unused until
+ * an index table was added to the directory. It is now more
+ * useful to describe the last 3/4 of the inode as a single
+ * union. We would probably be better off redesigning the
+ * entire structure from scratch, but we don't want to break
+ * commonality with OS/2's JFS at this time.
+ */
+ union {
+ struct {
+ /*
+ * This table contains the information needed to
+ * find a directory entry from a 32-bit index.
+ * If the index is small enough, the table is inline,
+ * otherwise, an x-tree root overlays this table
+ */
+ struct dir_table_slot _table[12]; /* 96: inline */
+
+ dtroot_t _dtroot; /* 288: dtree root */
+ } _dir; /* (384) */
+#define di_dirtable u._dir._table
+#define di_dtroot u._dir._dtroot
+#define di_parent di_dtroot.header.idotdot
+#define di_DASD di_dtroot.header.DASD
+
+ struct {
+ union {
+ u8 _data[96]; /* 96: unused */
+ struct {
+ void *_imap; /* 4: unused */
+ __le32 _gengen; /* 4: generator */
+ } _imap;
+ } _u1; /* 96: */
+#define di_gengen u._file._u1._imap._gengen
+
+ union {
+ xtpage_t _xtroot;
+ struct {
+ u8 unused[16]; /* 16: */
+ dxd_t _dxd; /* 16: */
+ union {
+ __le32 _rdev; /* 4: */
+ u8 _fastsymlink[128];
+ } _u;
+ u8 _inlineea[128];
+ } _special;
+ } _u2;
+ } _file;
+#define di_xtroot u._file._u2._xtroot
+#define di_dxd u._file._u2._special._dxd
+#define di_btroot di_xtroot
+#define di_inlinedata u._file._u2._special._u
+#define di_rdev u._file._u2._special._u._rdev
+#define di_fastsymlink u._file._u2._special._u._fastsymlink
+#define di_inlineea u._file._u2._special._inlineea
+ } u;
+};
+
+/* extended mode bits (on-disk inode di_mode) */
+#define IFJOURNAL 0x00010000 /* journalled file */
+#define ISPARSE 0x00020000 /* sparse file enabled */
+#define INLINEEA 0x00040000 /* inline EA area free */
+#define ISWAPFILE 0x00800000 /* file open for pager swap space */
+
+/* more extended mode bits: attributes for OS/2 */
+#define IREADONLY 0x02000000 /* no write access to file */
+#define IHIDDEN 0x04000000 /* hidden file */
+#define ISYSTEM 0x08000000 /* system file */
+
+#define IDIRECTORY 0x20000000 /* directory (shadow of real bit) */
+#define IARCHIVE 0x40000000 /* file archive bit */
+#define INEWNAME 0x80000000 /* non-8.3 filename format */
+
+#define IRASH 0x4E000000 /* mask for changeable attributes */
+#define ATTRSHIFT 25 /* bits to shift to move attribute
+ specification to mode position */
+
+/* extended attributes for Linux */
+
+#define JFS_NOATIME_FL 0x00080000 /* do not update atime */
+
+#define JFS_DIRSYNC_FL 0x00100000 /* dirsync behaviour */
+#define JFS_SYNC_FL 0x00200000 /* Synchronous updates */
+#define JFS_SECRM_FL 0x00400000 /* Secure deletion */
+#define JFS_UNRM_FL 0x00800000 /* allow for undelete */
+
+#define JFS_APPEND_FL 0x01000000 /* writes to file may only append */
+#define JFS_IMMUTABLE_FL 0x02000000 /* Immutable file */
+
+#define JFS_FL_USER_VISIBLE 0x03F80000
+#define JFS_FL_USER_MODIFIABLE 0x03F80000
+#define JFS_FL_INHERIT 0x03C80000
+
+/* These are identical to EXT[23]_IOC_GETFLAGS/SETFLAGS */
+#define JFS_IOC_GETFLAGS _IOR('f', 1, long)
+#define JFS_IOC_SETFLAGS _IOW('f', 2, long)
+
+#define JFS_IOC_GETFLAGS32 _IOR('f', 1, int)
+#define JFS_IOC_SETFLAGS32 _IOW('f', 2, int)
+
+#endif /*_H_JFS_DINODE */
Code Review / kvmfornfv.git / blobdiff