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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. */