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| Current File : //usr/src/sys/ufs/ufs/dinode.h |
/*-
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed for the FreeBSD Project by Marshall
* Kirk McKusick and Network Associates Laboratories, the Security
* Research Division of Network Associates, Inc. under DARPA/SPAWAR
* contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
* research program
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* 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. The names of the authors may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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
* $FreeBSD: release/9.1.0/sys/ufs/ufs/dinode.h 207141 2010-04-24 07:05:35Z jeff $
*/
#ifndef _UFS_UFS_DINODE_H_
#define _UFS_UFS_DINODE_H_
/*
* The root inode is the root of the filesystem. 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)
/*
* The Whiteout inode# is a dummy non-zero inode number which will
* never be allocated to a real file. It is used as a place holder
* in the directory entry which has been tagged as a DT_WHT entry.
* See the comments about ROOTINO above.
*/
#define WINO ((ino_t)1)
/*
* The size of physical and logical block numbers and time fields in UFS.
*/
typedef int32_t ufs1_daddr_t;
typedef int64_t ufs2_daddr_t;
typedef int64_t ufs_lbn_t;
typedef int64_t ufs_time_t;
/* File permissions. */
#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. */
#define IFWHT 0160000 /* Whiteout. */
/*
* A dinode contains all the meta-data associated with a UFS2 file.
* This structure defines the on-disk format of a dinode. Since
* this structure describes an on-disk structure, all its fields
* are defined by types with precise widths.
*/
#define NXADDR 2 /* External addresses in inode. */
#define NDADDR 12 /* Direct addresses in inode. */
#define NIADDR 3 /* Indirect addresses in inode. */
struct ufs2_dinode {
u_int16_t di_mode; /* 0: IFMT, permissions; see below. */
int16_t di_nlink; /* 2: File link count. */
u_int32_t di_uid; /* 4: File owner. */
u_int32_t di_gid; /* 8: File group. */
u_int32_t di_blksize; /* 12: Inode blocksize. */
u_int64_t di_size; /* 16: File byte count. */
u_int64_t di_blocks; /* 24: Blocks actually held. */
ufs_time_t di_atime; /* 32: Last access time. */
ufs_time_t di_mtime; /* 40: Last modified time. */
ufs_time_t di_ctime; /* 48: Last inode change time. */
ufs_time_t di_birthtime; /* 56: Inode creation time. */
int32_t di_mtimensec; /* 64: Last modified time. */
int32_t di_atimensec; /* 68: Last access time. */
int32_t di_ctimensec; /* 72: Last inode change time. */
int32_t di_birthnsec; /* 76: Inode creation time. */
int32_t di_gen; /* 80: Generation number. */
u_int32_t di_kernflags; /* 84: Kernel flags. */
u_int32_t di_flags; /* 88: Status flags (chflags). */
int32_t di_extsize; /* 92: External attributes block. */
ufs2_daddr_t di_extb[NXADDR];/* 96: External attributes block. */
ufs2_daddr_t di_db[NDADDR]; /* 112: Direct disk blocks. */
ufs2_daddr_t di_ib[NIADDR]; /* 208: Indirect disk blocks. */
u_int64_t di_modrev; /* 232: i_modrev for NFSv4 */
ino_t di_freelink; /* 240: SUJ: Next unlinked inode. */
uint32_t di_spare[3]; /* 244: Reserved; currently unused */
};
/*
* 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]
/*
* A UFS1 dinode contains all the meta-data associated with a UFS1 file.
* This structure defines the on-disk format of a UFS1 dinode. Since
* this structure describes an on-disk structure, all its fields
* are defined by types with precise widths.
*/
struct ufs1_dinode {
u_int16_t di_mode; /* 0: IFMT, permissions; see below. */
int16_t di_nlink; /* 2: File link count. */
ino_t di_freelink; /* 4: SUJ: Next unlinked inode. */
u_int64_t di_size; /* 8: File byte count. */
int32_t di_atime; /* 16: Last access time. */
int32_t di_atimensec; /* 20: Last access time. */
int32_t di_mtime; /* 24: Last modified time. */
int32_t di_mtimensec; /* 28: Last modified time. */
int32_t di_ctime; /* 32: Last inode change time. */
int32_t di_ctimensec; /* 36: Last inode change time. */
ufs1_daddr_t di_db[NDADDR]; /* 40: Direct disk blocks. */
ufs1_daddr_t di_ib[NIADDR]; /* 88: Indirect disk blocks. */
u_int32_t di_flags; /* 100: Status flags (chflags). */
int32_t di_blocks; /* 104: Blocks actually held. */
int32_t di_gen; /* 108: Generation number. */
u_int32_t di_uid; /* 112: File owner. */
u_int32_t di_gid; /* 116: File group. */
u_int64_t di_modrev; /* 120: i_modrev for NFSv4 */
};
#endif /* _UFS_UFS_DINODE_H_ */