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Diffstat (limited to 'sys/ufs/dinode.h')
| -rw-r--r-- | sys/ufs/dinode.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/sys/ufs/dinode.h b/sys/ufs/dinode.h new file mode 100644 index 000000000000..51ea7c7e813a --- /dev/null +++ b/sys/ufs/dinode.h @@ -0,0 +1,104 @@ +/* + * Copyright (c) 1982, 1989 The Regents of the University of California. + * All rights reserved. + * + * 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 the University of + * California, Berkeley and its contributors. + * 4. 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. + * + * from: @(#)dinode.h 7.10 (Berkeley) 5/8/91 + * $Id: dinode.h,v 1.3 1993/10/16 18:17:35 rgrimes Exp $ + */ + +/* + * A dinode contains all the meta-data associated with a UFS file. + * This structure defines the on-disk format of a dinode. + */ + +#define NDADDR 12 /* direct addresses in inode */ +#define NIADDR 3 /* indirect addresses in inode */ + +#define MAXFASTLINK (((NDADDR+NIADDR) * sizeof(daddr_t)) - 1) + +struct dinode { + u_short di_mode; /* 0: mode and type of file */ + short di_nlink; /* 2: number of links to file */ + uid_t di_uid; /* 4: owner's user id */ + gid_t di_gid; /* 6: owner's group id */ + u_quad di_qsize; /* 8: number of bytes in file */ + time_t di_atime; /* 16: time last accessed */ + long di_atspare; + time_t di_mtime; /* 24: time last modified */ + long di_mtspare; + time_t di_ctime; /* 32: last time inode changed */ + long di_ctspare; + union { + struct { + daddr_t di_udb[NDADDR]; /* 40: disk block addresses */ + daddr_t di_uib[NIADDR]; /* 88: indirect blocks */ + } di_addr; + char di_usymlink[MAXFASTLINK+1]; + } di_un; + long di_flags; /* 100: status, currently unused */ + long di_blocks; /* 104: blocks actually held */ + long di_gen; /* 108: generation number */ +#define DI_SPARE_SZ 4 /* 112: spare for 4 longs */ + u_long di_spare[DI_SPARE_SZ]; /* reserved (unused) */ +}; + +#define di_db di_un.di_addr.di_udb +#define di_ib di_un.di_addr.di_uib +#define di_symlink di_un.di_usymlink + +#if BYTE_ORDER == LITTLE_ENDIAN || defined(tahoe) /* ugh! -- must be fixed */ +#define di_size di_qsize.val[0] +#else /* BYTE_ORDER == BIG_ENDIAN */ +#define di_size di_qsize.val[1] +#endif +#define di_rdev di_db[0] + +/* file modes */ +#define IFMT 0170000 /* mask of file type */ +#define IFIFO 0010000 /* named pipe (fifo) */ +#define IFCHR 0020000 /* character special device */ +#define IFDIR 0040000 /* directory */ +#define IFBLK 0060000 /* block special device */ +#define IFREG 0100000 /* regular file */ +#define IFLNK 0120000 /* symbolic link */ +#define IFSOCK 0140000 /* UNIX domain socket */ + +#define ISUID 04000 /* set user identifier when exec'ing */ +#define ISGID 02000 /* set group identifier when exec'ing */ +#define ISVTX 01000 /* save execution information on exit */ +#define IREAD 0400 /* read permission */ +#define IWRITE 0200 /* write permission */ +#define IEXEC 0100 /* execute permission */ + +#define DFASTLINK(di) \ + ((((di).di_mode & IFMT) == IFLNK) && \ + ((di).di_size <= MAXFASTLINK) && \ + ((di).di_size == (di).di_spare[0])) |