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/* $OpenBSD: ext2fs_dinode.h,v 1.12 2010/02/16 08:24:13 otto Exp $ */
/* $NetBSD: ext2fs_dinode.h,v 1.6 2000/01/26 16:21:33 bouyer Exp $ */
/*
* Copyright (c) 1997 Manuel Bouyer.
* 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. 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 8.6 (Berkeley) 9/13/94
* Modified for ext2fs by Manuel Bouyer.
*/
#include <sys/stat.h>
/*
* The root inode is the root of the file system. Inode 0 can't be used for
* normal purposes and bad blocks are normally linked to inode 1, thus
* the root inode is 2.
* Inode 3 to 10 are reserved in ext2fs.
*/
#define EXT2_ROOTINO ((ino_t)2)
#define EXT2_RESIZEINO ((ino_t)7)
#define EXT2_FIRSTINO ((ino_t)11)
/*
* A dinode contains all the meta-data associated with a UFS 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 NDADDR 12 /* Direct addresses in inode. */
#define NIADDR 3 /* Indirect addresses in inode. */
#define EXT2_MAXSYMLINKLEN ((NDADDR+NIADDR) * sizeof (u_int32_t))
struct ext2fs_dinode {
u_int16_t e2di_mode; /* 0: IFMT, permissions; see below. */
u_int16_t e2di_uid_low; /* 2: Owner UID, lowest bits */
u_int32_t e2di_size; /* 4: Size (in bytes) */
u_int32_t e2di_atime; /* 8: Access time */
u_int32_t e2di_ctime; /* 12: Create time */
u_int32_t e2di_mtime; /* 16: Modification time */
u_int32_t e2di_dtime; /* 20: Deletion time */
u_int16_t e2di_gid_low; /* 24: Owner GID, lowest bits */
u_int16_t e2di_nlink; /* 26: File link count */
u_int32_t e2di_nblock; /* 28: Blocks count */
u_int32_t e2di_flags; /* 32: Status flags (chflags) */
u_int32_t e2di_linux_reserved1; /* 36 */
u_int32_t e2di_blocks[NDADDR+NIADDR]; /* 40: disk blocks */
u_int32_t e2di_gen; /* 100: generation number */
u_int32_t e2di_facl; /* 104: file ACL (not implemented) */
u_int32_t e2di_dacl; /* 108: dir ACL (not implemented) */
u_int32_t e2di_faddr; /* 112: fragment address */
u_int8_t e2di_nfrag; /* 116: fragment number */
u_int8_t e2di_fsize; /* 117: fragment size */
u_int16_t e2di_linux_reserved2; /* 118 */
u_int16_t e2di_uid_high; /* 120: 16 highest bits of uid */
u_int16_t e2di_gid_high; /* 122: 16 highest bits of gid */
u_int32_t e2di_linux_reserved3; /* 124 */
};
#define E2MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(u_int32_t))
/* File permissions. */
#define EXT2_IEXEC 0000100 /* Executable. */
#define EXT2_IWRITE 0000200 /* Writeable. */
#define EXT2_IREAD 0000400 /* Readable. */
#define EXT2_ISVTX 0001000 /* Sticky bit. */
#define EXT2_ISGID 0002000 /* Set-gid. */
#define EXT2_ISUID 0004000 /* Set-uid. */
/* File types. */
#define EXT2_IFMT 0170000 /* Mask of file type. */
#define EXT2_IFIFO 0010000 /* Named pipe (fifo). */
#define EXT2_IFCHR 0020000 /* Character device. */
#define EXT2_IFDIR 0040000 /* Directory file. */
#define EXT2_IFBLK 0060000 /* Block device. */
#define EXT2_IFREG 0100000 /* Regular file. */
#define EXT2_IFLNK 0120000 /* Symbolic link. */
#define EXT2_IFSOCK 0140000 /* UNIX domain socket. */
/* file flags */
#define EXT2_SECRM 0x00000001 /* Secure deletion */
#define EXT2_UNRM 0x00000002 /* Undelete */
#define EXT2_COMPR 0x00000004 /* Compress file */
#define EXT2_SYNC 0x00000008 /* Synchronous updates */
#define EXT2_IMMUTABLE 0x00000010 /* Immutable file */
#define EXT2_APPEND 0x00000020 /* writes to file may only append */
#define EXT2_NODUMP 0x00000040 /* do not dump file */
/* Size of on-disk inode. */
#define EXT2_REV0_DINODE_SIZE sizeof(struct ext2fs_dinode)
#define EXT2_DINODE_SIZE(fs) ((fs)->e2fs.e2fs_rev > E2FS_REV0 ? \
(fs)->e2fs.e2fs_inode_size : \
EXT2_REV0_DINODE_SIZE)
/*
* The e2di_blocks 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 e2di_rdev e2di_blocks[0]
#define e2di_shortlink e2di_blocks
/* e2fs needs byte swapping on big-endian systems */
#if BYTE_ORDER == LITTLE_ENDIAN
# define e2fs_iload(old, new) memcpy((new),(old),sizeof(struct ext2fs_dinode))
# define e2fs_isave(old, new) memcpy((new),(old),sizeof(struct ext2fs_dinode))
#else
void e2fs_i_bswap(struct ext2fs_dinode *, struct ext2fs_dinode *);
# define e2fs_iload(old, new) e2fs_i_bswap((old), (new))
# define e2fs_isave(old, new) e2fs_i_bswap((old), (new))
#endif
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