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/*
Copyright (C) 1994 Free Software Foundation
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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
/*
* Copyright (c) 1982, 1989, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)dinode.h 8.3 (Berkeley) 1/21/94
*/
/*
* The root inode is the root of the file system. Inode 0 can't be used for
* normal purposes and historically bad blocks were linked to inode 1, thus
* the root inode is 2. (Inode 1 is no longer used for this purpose, however
* numerous dump tapes make this assumption, so we are stuck with it).
*/
#define ROOTINO ((ino_t)2)
/*
* A dinode contains all the meta-data associated with a UFS file.
* This structure defines the on-disk format of a dinode.
*/
#define NDADDR 12 /* Direct addresses in inode. */
#define NIADDR 3 /* Indirect addresses in inode. */
/* Maximum value of di_nlink field. */
#define LINK_MAX 32767
/* Indexes into di_ib */
#define INDIR_SINGLE 0
#define INDIR_DOUBLE 1
#define INDIR_TRIPLE 2 /* NOT SUPPORTED */
struct dinode {
u_short di_model; /* 0: IFMT and permissions. */
short di_nlink; /* 2: File link count. */
union
{
u_long diu_author; /* 4: File author */
u_short diu_oldids[2]; /* Old format uid and gid */
} di_u;
u_quad_t di_size; /* 8: File byte count. */
struct timespec di_atime; /* 16: Last access time. */
struct timespec di_mtime; /* 24: Last modified time. */
struct timespec di_ctime; /* 32: Last inode change time. */
daddr_t di_db[NDADDR]; /* 40: Direct disk blocks. */
daddr_t di_ib[NIADDR]; /* 88: Indirect disk blocks. */
u_long di_flags; /* 100: Status flags (chflags). */
long di_blocks; /* 104: Blocks actually held. */
long di_gen; /* 108: Generation number. */
u_long di_uid; /* 112: File owner. */
u_long di_gid; /* 116: File group. */
u_short di_modeh; /* 120: Mode high bits */
u_short di_spare; /* 122: unused */
long di_trans; /* 124: filesystem translator */
};
#define di_author di_u.diu_author /* GNU extension */
#define di_ouid di_u.diu_oldids[0]
#define di_ogid di_u.diu_oldids[1]
/*
* The di_db fields may be overlaid with other information for
* file types that do not have associated disk storage. Block
* and character devices overlay the first data block with their
* dev_t value. Short symbolic links place their path in the
* di_db area.
*/
#define di_rdev di_db[0]
#define di_shortlink di_db
#define MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(daddr_t))
/* File modes. */
#define IEXEC 0000100 /* Executable. */
#define IWRITE 0000200 /* Writeable. */
#define IREAD 0000400 /* Readable. */
#define ISVTX 0001000 /* Sticky bit. */
#define ISGID 0002000 /* Set-gid. */
#define ISUID 0004000 /* Set-uid. */
/* File types. */
#define IFMT 0170000 /* Mask of file type. */
#define IFIFO 0010000 /* Named pipe (fifo). */
#define IFCHR 0020000 /* Character device. */
#define IFDIR 0040000 /* Directory file. */
#define IFBLK 0060000 /* Block device. */
#define IFREG 0100000 /* Regular file. */
#define IFLNK 0120000 /* Symbolic link. */
#define IFSOCK 0140000 /* UNIX domain socket. */
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