146 lines
6.1 KiB
C
146 lines
6.1 KiB
C
/* $NetBSD: ext2fs_dinode.h,v 1.6 2000/01/26 16:21:33 bouyer Exp $ */
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/*
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* Copyright (c) 1997 Manuel Bouyer.
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* Copyright (c) 1982, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)dinode.h 8.6 (Berkeley) 9/13/94
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* Modified for ext2fs by Manuel Bouyer.
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*/
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#include <sys/stat.h>
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/*
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* The root inode is the root of the file system. Inode 0 can't be used for
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* normal purposes and bad blocks are normally linked to inode 1, thus
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* the root inode is 2.
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* Inode 3 to 10 are reserved in ext2fs.
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*/
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#define EXT2_ROOTINO ((ino_t)2)
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#define EXT2_FIRSTINO ((ino_t)11)
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/*
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* A dinode contains all the meta-data associated with a UFS file.
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* This structure defines the on-disk format of a dinode. Since
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* this structure describes an on-disk structure, all its fields
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* are defined by types with precise widths.
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*/
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#define NDADDR 12 /* Direct addresses in inode. */
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#define NIADDR 3 /* Indirect addresses in inode. */
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#define EXT2_MAXSYMLINKLEN ((NDADDR+NIADDR) * sizeof (u_int32_t))
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struct ext2fs_dinode {
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u_int16_t e2di_mode; /* 0: IFMT, permissions; see below. */
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u_int16_t e2di_uid; /* 2: Owner UID */
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u_int32_t e2di_size; /* 4: Size (in bytes) */
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u_int32_t e2di_atime; /* 8: Acces time */
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u_int32_t e2di_ctime; /* 12: Create time */
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u_int32_t e2di_mtime; /* 16: Modification time */
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u_int32_t e2di_dtime; /* 20: Deletion time */
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u_int16_t e2di_gid; /* 24: Owner GID */
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u_int16_t e2di_nlink; /* 26: File link count */
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u_int32_t e2di_nblock; /* 28: Blocks count */
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u_int32_t e2di_flags; /* 32: Status flags (chflags) */
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u_int32_t e2di_linux_reserved1; /* 36 */
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u_int32_t e2di_blocks[NDADDR+NIADDR]; /* 40: disk blocks */
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u_int32_t e2di_gen; /* 100: generation number */
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u_int32_t e2di_facl; /* 104: file ACL (not implemented) */
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u_int32_t e2di_dacl; /* 108: dir ACL (not implemented) */
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u_int32_t e2di_faddr; /* 112: fragment address */
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u_int8_t e2di_nfrag; /* 116: fragment number */
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u_int8_t e2di_fsize; /* 117: fragment size */
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u_int16_t e2di_linux_reserved2; /* 118 */
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u_int32_t e2di_linux_reserved3[2]; /* 120 */
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};
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#define E2MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(u_int32_t))
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/* File permissions. */
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#define EXT2_IEXEC 0000100 /* Executable. */
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#define EXT2_IWRITE 0000200 /* Writeable. */
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#define EXT2_IREAD 0000400 /* Readable. */
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#define EXT2_ISVTX 0001000 /* Sticky bit. */
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#define EXT2_ISGID 0002000 /* Set-gid. */
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#define EXT2_ISUID 0004000 /* Set-uid. */
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/* File types. */
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#define EXT2_IFMT 0170000 /* Mask of file type. */
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#define EXT2_IFIFO 0010000 /* Named pipe (fifo). */
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#define EXT2_IFCHR 0020000 /* Character device. */
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#define EXT2_IFDIR 0040000 /* Directory file. */
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#define EXT2_IFBLK 0060000 /* Block device. */
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#define EXT2_IFREG 0100000 /* Regular file. */
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#define EXT2_IFLNK 0120000 /* Symbolic link. */
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#define EXT2_IFSOCK 0140000 /* UNIX domain socket. */
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/* file flags */
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#define EXT2_SECRM 0x00000001 /* Secure deletion */
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#define EXT2_UNRM 0x00000002 /* Undelete */
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#define EXT2_COMPR 0x00000004 /* Compress file */
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#define EXT2_SYNC 0x00000008 /* Synchronous updates */
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#define EXT2_IMMUTABLE 0x00000010 /* Immutable file */
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#define EXT2_APPEND 0x00000020 /* writes to file may only append */
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#define EXT2_NODUMP 0x00000040 /* do not dump file */
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/* Size of on-disk inode. */
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#define EXT2_DINODE_SIZE (sizeof(struct ext2fs_dinode)) /* 128 */
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/*
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* The e2di_blocks fields may be overlaid with other information for
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* file types that do not have associated disk storage. Block
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* and character devices overlay the first data block with their
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* dev_t value. Short symbolic links place their path in the
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* di_db area.
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*/
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#define e2di_rdev e2di_blocks[0]
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#define e2di_shortlink e2di_blocks
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/* e2fs needs byte swapping on big-endian systems */
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#if BYTE_ORDER == LITTLE_ENDIAN
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# define e2fs_iload(old, new) memcpy((new),(old),sizeof(struct ext2fs_dinode))
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# define e2fs_isave(old, new) memcpy((new),(old),sizeof(struct ext2fs_dinode))
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#else
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void e2fs_i_bswap __P((struct ext2fs_dinode *, struct ext2fs_dinode *));
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# define e2fs_iload(old, new) e2fs_i_bswap((old), (new))
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# define e2fs_isave(old, new) e2fs_i_bswap((old), (new))
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#endif
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