ia64/linux-2.6.18-xen.hg

annotate fs/jfs/jfs_dinode.h @ 524:7f8b544237bf

netfront: Allow netfront in domain 0.

This is useful if your physical network device is in a utility domain.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Tue Apr 15 15:18:58 2008 +0100 (2008-04-15)
parents 831230e53067
children
rev   line source
ian@0 1 /*
ian@0 2 * Copyright (c) International Business Machines Corp., 2000-2001
ian@0 3 *
ian@0 4 * This program is free software; you can redistribute it and/or modify
ian@0 5 * it under the terms of the GNU General Public License as published by
ian@0 6 * the Free Software Foundation; either version 2 of the License, or
ian@0 7 * (at your option) any later version.
ian@0 8 *
ian@0 9 * This program is distributed in the hope that it will be useful,
ian@0 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
ian@0 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
ian@0 12 * the GNU General Public License for more details.
ian@0 13 *
ian@0 14 * You should have received a copy of the GNU General Public License
ian@0 15 * along with this program; if not, write to the Free Software
ian@0 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
ian@0 17 */
ian@0 18 #ifndef _H_JFS_DINODE
ian@0 19 #define _H_JFS_DINODE
ian@0 20
ian@0 21 /*
ian@0 22 * jfs_dinode.h: on-disk inode manager
ian@0 23 */
ian@0 24
ian@0 25 #define INODESLOTSIZE 128
ian@0 26 #define L2INODESLOTSIZE 7
ian@0 27 #define log2INODESIZE 9 /* log2(bytes per dinode) */
ian@0 28
ian@0 29
ian@0 30 /*
ian@0 31 * on-disk inode : 512 bytes
ian@0 32 *
ian@0 33 * note: align 64-bit fields on 8-byte boundary.
ian@0 34 */
ian@0 35 struct dinode {
ian@0 36 /*
ian@0 37 * I. base area (128 bytes)
ian@0 38 * ------------------------
ian@0 39 *
ian@0 40 * define generic/POSIX attributes
ian@0 41 */
ian@0 42 __le32 di_inostamp; /* 4: stamp to show inode belongs to fileset */
ian@0 43 __le32 di_fileset; /* 4: fileset number */
ian@0 44 __le32 di_number; /* 4: inode number, aka file serial number */
ian@0 45 __le32 di_gen; /* 4: inode generation number */
ian@0 46
ian@0 47 pxd_t di_ixpxd; /* 8: inode extent descriptor */
ian@0 48
ian@0 49 __le64 di_size; /* 8: size */
ian@0 50 __le64 di_nblocks; /* 8: number of blocks allocated */
ian@0 51
ian@0 52 __le32 di_nlink; /* 4: number of links to the object */
ian@0 53
ian@0 54 __le32 di_uid; /* 4: user id of owner */
ian@0 55 __le32 di_gid; /* 4: group id of owner */
ian@0 56
ian@0 57 __le32 di_mode; /* 4: attribute, format and permission */
ian@0 58
ian@0 59 struct timestruc_t di_atime; /* 8: time last data accessed */
ian@0 60 struct timestruc_t di_ctime; /* 8: time last status changed */
ian@0 61 struct timestruc_t di_mtime; /* 8: time last data modified */
ian@0 62 struct timestruc_t di_otime; /* 8: time created */
ian@0 63
ian@0 64 dxd_t di_acl; /* 16: acl descriptor */
ian@0 65
ian@0 66 dxd_t di_ea; /* 16: ea descriptor */
ian@0 67
ian@0 68 __le32 di_next_index; /* 4: Next available dir_table index */
ian@0 69
ian@0 70 __le32 di_acltype; /* 4: Type of ACL */
ian@0 71
ian@0 72 /*
ian@0 73 * Extension Areas.
ian@0 74 *
ian@0 75 * Historically, the inode was partitioned into 4 128-byte areas,
ian@0 76 * the last 3 being defined as unions which could have multiple
ian@0 77 * uses. The first 96 bytes had been completely unused until
ian@0 78 * an index table was added to the directory. It is now more
ian@0 79 * useful to describe the last 3/4 of the inode as a single
ian@0 80 * union. We would probably be better off redesigning the
ian@0 81 * entire structure from scratch, but we don't want to break
ian@0 82 * commonality with OS/2's JFS at this time.
ian@0 83 */
ian@0 84 union {
ian@0 85 struct {
ian@0 86 /*
ian@0 87 * This table contains the information needed to
ian@0 88 * find a directory entry from a 32-bit index.
ian@0 89 * If the index is small enough, the table is inline,
ian@0 90 * otherwise, an x-tree root overlays this table
ian@0 91 */
ian@0 92 struct dir_table_slot _table[12]; /* 96: inline */
ian@0 93
ian@0 94 dtroot_t _dtroot; /* 288: dtree root */
ian@0 95 } _dir; /* (384) */
ian@0 96 #define di_dirtable u._dir._table
ian@0 97 #define di_dtroot u._dir._dtroot
ian@0 98 #define di_parent di_dtroot.header.idotdot
ian@0 99 #define di_DASD di_dtroot.header.DASD
ian@0 100
ian@0 101 struct {
ian@0 102 union {
ian@0 103 u8 _data[96]; /* 96: unused */
ian@0 104 struct {
ian@0 105 void *_imap; /* 4: unused */
ian@0 106 __le32 _gengen; /* 4: generator */
ian@0 107 } _imap;
ian@0 108 } _u1; /* 96: */
ian@0 109 #define di_gengen u._file._u1._imap._gengen
ian@0 110
ian@0 111 union {
ian@0 112 xtpage_t _xtroot;
ian@0 113 struct {
ian@0 114 u8 unused[16]; /* 16: */
ian@0 115 dxd_t _dxd; /* 16: */
ian@0 116 union {
ian@0 117 __le32 _rdev; /* 4: */
ian@0 118 u8 _fastsymlink[128];
ian@0 119 } _u;
ian@0 120 u8 _inlineea[128];
ian@0 121 } _special;
ian@0 122 } _u2;
ian@0 123 } _file;
ian@0 124 #define di_xtroot u._file._u2._xtroot
ian@0 125 #define di_dxd u._file._u2._special._dxd
ian@0 126 #define di_btroot di_xtroot
ian@0 127 #define di_inlinedata u._file._u2._special._u
ian@0 128 #define di_rdev u._file._u2._special._u._rdev
ian@0 129 #define di_fastsymlink u._file._u2._special._u._fastsymlink
ian@0 130 #define di_inlineea u._file._u2._special._inlineea
ian@0 131 } u;
ian@0 132 };
ian@0 133
ian@0 134 /* extended mode bits (on-disk inode di_mode) */
ian@0 135 #define IFJOURNAL 0x00010000 /* journalled file */
ian@0 136 #define ISPARSE 0x00020000 /* sparse file enabled */
ian@0 137 #define INLINEEA 0x00040000 /* inline EA area free */
ian@0 138 #define ISWAPFILE 0x00800000 /* file open for pager swap space */
ian@0 139
ian@0 140 /* more extended mode bits: attributes for OS/2 */
ian@0 141 #define IREADONLY 0x02000000 /* no write access to file */
ian@0 142 #define IHIDDEN 0x04000000 /* hidden file */
ian@0 143 #define ISYSTEM 0x08000000 /* system file */
ian@0 144
ian@0 145 #define IDIRECTORY 0x20000000 /* directory (shadow of real bit) */
ian@0 146 #define IARCHIVE 0x40000000 /* file archive bit */
ian@0 147 #define INEWNAME 0x80000000 /* non-8.3 filename format */
ian@0 148
ian@0 149 #define IRASH 0x4E000000 /* mask for changeable attributes */
ian@0 150 #define ATTRSHIFT 25 /* bits to shift to move attribute
ian@0 151 specification to mode position */
ian@0 152
ian@0 153 /* extended attributes for Linux */
ian@0 154
ian@0 155 #define JFS_NOATIME_FL 0x00080000 /* do not update atime */
ian@0 156
ian@0 157 #define JFS_DIRSYNC_FL 0x00100000 /* dirsync behaviour */
ian@0 158 #define JFS_SYNC_FL 0x00200000 /* Synchronous updates */
ian@0 159 #define JFS_SECRM_FL 0x00400000 /* Secure deletion */
ian@0 160 #define JFS_UNRM_FL 0x00800000 /* allow for undelete */
ian@0 161
ian@0 162 #define JFS_APPEND_FL 0x01000000 /* writes to file may only append */
ian@0 163 #define JFS_IMMUTABLE_FL 0x02000000 /* Immutable file */
ian@0 164
ian@0 165 #define JFS_FL_USER_VISIBLE 0x03F80000
ian@0 166 #define JFS_FL_USER_MODIFIABLE 0x03F80000
ian@0 167 #define JFS_FL_INHERIT 0x03C80000
ian@0 168
ian@0 169 /* These are identical to EXT[23]_IOC_GETFLAGS/SETFLAGS */
ian@0 170 #define JFS_IOC_GETFLAGS _IOR('f', 1, long)
ian@0 171 #define JFS_IOC_SETFLAGS _IOW('f', 2, long)
ian@0 172
ian@0 173
ian@0 174 #endif /*_H_JFS_DINODE */