FreeBSD/Linux Kernel Cross Reference
sys/ufs/ext2fs/ext2fs_dinode.h

     /*      $NetBSD: ext2fs_dinode.h,v 1.11 2004/03/22 19:23:08 bouyer Exp $        */
     
     /*
      * 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.
     */
    
    /*
     * Copyright (c) 1997 Manuel Bouyer.
     *
     * 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 Manuel Bouyer.
     * 4. The name of the author 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 ``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 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.
     */
    
    #ifndef _UFS_EXT2FS_EXT2FS_DINODE_H_
    #define _UFS_EXT2FS_EXT2FS_DINODE_H_
    
    #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_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;       /*   2: Owner UID */
           u_int32_t       e2di_size;      /*       4: Size (in bytes) */
           u_int32_t       e2di_atime;     /*       8: Acces 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;       /*  24: Owner GID */
           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_int32_t       e2di_linux_reserved3[2]; /* 120 */
   };
           
   
           
   #define E2MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(u_int32_t))
   
   /* File permissions. */
   #define EXT2_IEXEC              0000100         /* Executable. */
   #define EXT2_IWRITE             0000200         /* Writable. */
   #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_DINODE_SIZE        (sizeof(struct ext2fs_dinode))  /* 128 */
   
   /*
    * 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 __P((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
   
   #endif /* !_UFS_EXT2FS_EXT2FS_DINODE_H_ */

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