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Annotation of qemu/roms/openbios/fs/grubfs/ufs_dinode.h, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 2002 Networks Associates Technology, Inc.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This software was developed for the FreeBSD Project by Marshall
        !             6:  * Kirk McKusick and Network Associates Laboratories, the Security
        !             7:  * Research Division of Network Associates, Inc. under DARPA/SPAWAR
        !             8:  * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
        !             9:  * research program
        !            10:  *
        !            11:  * Redistribution and use in source and binary forms, with or without
        !            12:  * modification, are permitted provided that the following conditions
        !            13:  * are met:
        !            14:  * 1. Redistributions of source code must retain the above copyright
        !            15:  *    notice, this list of conditions and the following disclaimer.
        !            16:  * 2. Redistributions in binary form must reproduce the above copyright
        !            17:  *    notice, this list of conditions and the following disclaimer in the
        !            18:  *    documentation and/or other materials provided with the distribution.
        !            19:  *
        !            20:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
        !            21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
        !            24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            30:  * SUCH DAMAGE.
        !            31:  *
        !            32:  * Copyright (c) 1982, 1989, 1993
        !            33:  *     The Regents of the University of California.  All rights reserved.
        !            34:  * (c) UNIX System Laboratories, Inc.
        !            35:  * All or some portions of this file are derived from material licensed
        !            36:  * to the University of California by American Telephone and Telegraph
        !            37:  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
        !            38:  * the permission of UNIX System Laboratories, Inc.
        !            39:  *
        !            40:  * Redistribution and use in source and binary forms, with or without
        !            41:  * modification, are permitted provided that the following conditions
        !            42:  * are met:
        !            43:  * 1. Redistributions of source code must retain the above copyright
        !            44:  *    notice, this list of conditions and the following disclaimer.
        !            45:  * 2. Redistributions in binary form must reproduce the above copyright
        !            46:  *    notice, this list of conditions and the following disclaimer in the
        !            47:  *    documentation and/or other materials provided with the distribution.
        !            48:  * 3. The names of the authors may not be used to endorse or promote
        !            49:  *    products derived from this software without specific prior written
        !            50:  *    permission.
        !            51:  *
        !            52:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
        !            53:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            54:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            55:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
        !            56:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            57:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            58:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            59:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            60:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            61:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            62:  * SUCH DAMAGE.
        !            63:  *
        !            64:  *     @(#)dinode.h    8.3 (Berkeley) 1/21/94
        !            65:  * $FreeBSD: src/sys/ufs/ufs/dinode.h,v 1.13.2.1 2005/01/31 23:27:01 imp Exp $
        !            66:  */
        !            67: 
        !            68: #ifndef _UFS_UFS_DINODE_H_
        !            69: #define        _UFS_UFS_DINODE_H_
        !            70: 
        !            71: /*
        !            72:  * The root inode is the root of the filesystem.  Inode 0 can't be used for
        !            73:  * normal purposes and historically bad blocks were linked to inode 1, thus
        !            74:  * the root inode is 2.  (Inode 1 is no longer used for this purpose, however
        !            75:  * numerous dump tapes make this assumption, so we are stuck with it).
        !            76:  */
        !            77: #define        ROOTINO ((ino_t)2)
        !            78: 
        !            79: /*
        !            80:  * The Whiteout inode# is a dummy non-zero inode number which will
        !            81:  * never be allocated to a real file.  It is used as a place holder
        !            82:  * in the directory entry which has been tagged as a DT_W entry.
        !            83:  * See the comments about ROOTINO above.
        !            84:  */
        !            85: #define        WINO    ((ino_t)1)
        !            86: 
        !            87: /*
        !            88:  * The size of physical and logical block numbers and time fields in UFS.
        !            89:  */
        !            90: typedef        int32_t ufs1_daddr_t;
        !            91: typedef        int64_t ufs2_daddr_t;
        !            92: typedef int64_t ufs_lbn_t;
        !            93: typedef int64_t ufs_time_t;
        !            94: 
        !            95: /* File permissions. */
        !            96: #define        IEXEC           0000100         /* Executable. */
        !            97: #define        IWRITE          0000200         /* Writeable. */
        !            98: #define        IREAD           0000400         /* Readable. */
        !            99: #define        ISVTX           0001000         /* Sticky bit. */
        !           100: #define        ISGID           0002000         /* Set-gid. */
        !           101: #define        ISUID           0004000         /* Set-uid. */
        !           102: 
        !           103: /* File types. */
        !           104: #define        IFMT            0170000         /* Mask of file type. */
        !           105: #define        IFIFO           0010000         /* Named pipe (fifo). */
        !           106: #define        IFCHR           0020000         /* Character device. */
        !           107: #define        IFDIR           0040000         /* Directory file. */
        !           108: #define        IFBLK           0060000         /* Block device. */
        !           109: #define        IFREG           0100000         /* Regular file. */
        !           110: #define        IFLNK           0120000         /* Symbolic link. */
        !           111: #define        IFSOCK          0140000         /* UNIX domain socket. */
        !           112: #define        IFWHT           0160000         /* Whiteout. */
        !           113: 
        !           114: /*
        !           115:  * A dinode contains all the meta-data associated with a UFS2 file.
        !           116:  * This structure defines the on-disk format of a dinode. Since
        !           117:  * this structure describes an on-disk structure, all its fields
        !           118:  * are defined by types with precise widths.
        !           119:  */
        !           120: 
        !           121: #define        NXADDR  2                       /* External addresses in inode. */
        !           122: #define        NDADDR  12                      /* Direct addresses in inode. */
        !           123: #define        NIADDR  3                       /* Indirect addresses in inode. */
        !           124: 
        !           125: struct ufs2_dinode {
        !           126:        uint16_t        di_mode;        /*   0: IFMT, permissions; see below. */
        !           127:        int16_t         di_nlink;       /*   2: File link count. */
        !           128:        uint32_t        di_uid;         /*   4: File owner. */
        !           129:        uint32_t        di_gid;         /*   8: File group. */
        !           130:        uint32_t        di_blksize;     /*  12: Inode blocksize. */
        !           131:        uint64_t        di_size;        /*  16: File byte count. */
        !           132:        uint64_t        di_blocks;      /*  24: Bytes actually held. */
        !           133:        ufs_time_t      di_atime;       /*  32: Last access time. */
        !           134:        ufs_time_t      di_mtime;       /*  40: Last modified time. */
        !           135:        ufs_time_t      di_ctime;       /*  48: Last inode change time. */
        !           136:        ufs_time_t      di_birthtime;   /*  56: Inode creation time. */
        !           137:        int32_t         di_mtimensec;   /*  64: Last modified time. */
        !           138:        int32_t         di_atimensec;   /*  68: Last access time. */
        !           139:        int32_t         di_ctimensec;   /*  72: Last inode change time. */
        !           140:        int32_t         di_birthnsec;   /*  76: Inode creation time. */
        !           141:        int32_t         di_gen;         /*  80: Generation number. */
        !           142:        uint32_t        di_kernflags;   /*  84: Kernel flags. */
        !           143:        uint32_t        di_flags;       /*  88: Status flags (chflags). */
        !           144:        int32_t         di_extsize;     /*  92: External attributes block. */
        !           145:        ufs2_daddr_t    di_extb[NXADDR];/*  96: External attributes block. */
        !           146:        ufs2_daddr_t    di_db[NDADDR];  /* 112: Direct disk blocks. */
        !           147:        ufs2_daddr_t    di_ib[NIADDR];  /* 208: Indirect disk blocks. */
        !           148:        int64_t         di_spare[3];    /* 232: Reserved; currently unused */
        !           149: };
        !           150: 
        !           151: /*
        !           152:  * The di_db fields may be overlaid with other information for
        !           153:  * file types that do not have associated disk storage. Block
        !           154:  * and character devices overlay the first data block with their
        !           155:  * dev_t value. Short symbolic links place their path in the
        !           156:  * di_db area.
        !           157:  */
        !           158: #define        di_rdev di_db[0]
        !           159: 
        !           160: /*
        !           161:  * A UFS1 dinode contains all the meta-data associated with a UFS1 file.
        !           162:  * This structure defines the on-disk format of a UFS1 dinode. Since
        !           163:  * this structure describes an on-disk structure, all its fields
        !           164:  * are defined by types with precise widths.
        !           165:  */
        !           166: struct ufs1_dinode {
        !           167:        uint16_t        di_mode;        /*   0: IFMT, permissions; see below. */
        !           168:        int16_t         di_nlink;       /*   2: File link count. */
        !           169:        union {
        !           170:                uint16_t oldids[2];     /*   4: Ffs: old user and group ids. */
        !           171:        } di_u;
        !           172:        uint64_t        di_size;        /*   8: File byte count. */
        !           173:        int32_t         di_atime;       /*  16: Last access time. */
        !           174:        int32_t         di_atimensec;   /*  20: Last access time. */
        !           175:        int32_t         di_mtime;       /*  24: Last modified time. */
        !           176:        int32_t         di_mtimensec;   /*  28: Last modified time. */
        !           177:        int32_t         di_ctime;       /*  32: Last inode change time. */
        !           178:        int32_t         di_ctimensec;   /*  36: Last inode change time. */
        !           179:        ufs1_daddr_t    di_db[NDADDR];  /*  40: Direct disk blocks. */
        !           180:        ufs1_daddr_t    di_ib[NIADDR];  /*  88: Indirect disk blocks. */
        !           181:        uint32_t        di_flags;       /* 100: Status flags (chflags). */
        !           182:        int32_t         di_blocks;      /* 104: Blocks actually held. */
        !           183:        int32_t         di_gen;         /* 108: Generation number. */
        !           184:        uint32_t        di_uid;         /* 112: File owner. */
        !           185:        uint32_t        di_gid;         /* 116: File group. */
        !           186:        int32_t         di_spare[2];    /* 120: Reserved; currently unused */
        !           187: };
        !           188: #define        di_ogid         di_u.oldids[1]
        !           189: #define        di_ouid         di_u.oldids[0]
        !           190: 
        !           191: #endif /* _UFS_UFS_DINODE_H_ */

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