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lfs.h revision 1.178
      1  1.178  dholland /*	$NetBSD: lfs.h,v 1.178 2015/08/12 18:27:01 dholland Exp $	*/
      2  1.148  dholland 
      3  1.148  dholland /*  from NetBSD: dinode.h,v 1.22 2013/01/22 09:39:18 dholland Exp  */
      4  1.148  dholland /*  from NetBSD: dir.h,v 1.21 2009/07/22 04:49:19 dholland Exp  */
      5    1.6   mycroft 
      6    1.1   mycroft /*-
      7   1.46  perseant  * Copyright (c) 1999, 2000, 2001, 2002, 2003 The NetBSD Foundation, Inc.
      8   1.11  perseant  * All rights reserved.
      9   1.11  perseant  *
     10   1.11  perseant  * This code is derived from software contributed to The NetBSD Foundation
     11   1.11  perseant  * by Konrad E. Schroder <perseant (at) hhhh.org>.
     12   1.11  perseant  *
     13   1.11  perseant  * Redistribution and use in source and binary forms, with or without
     14   1.11  perseant  * modification, are permitted provided that the following conditions
     15   1.11  perseant  * are met:
     16   1.11  perseant  * 1. Redistributions of source code must retain the above copyright
     17   1.11  perseant  *    notice, this list of conditions and the following disclaimer.
     18   1.11  perseant  * 2. Redistributions in binary form must reproduce the above copyright
     19   1.11  perseant  *    notice, this list of conditions and the following disclaimer in the
     20   1.11  perseant  *    documentation and/or other materials provided with the distribution.
     21   1.11  perseant  *
     22   1.11  perseant  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     23   1.11  perseant  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     24   1.11  perseant  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     25   1.11  perseant  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     26   1.11  perseant  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     27   1.11  perseant  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     28   1.11  perseant  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     29   1.11  perseant  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     30   1.11  perseant  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     31   1.11  perseant  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     32   1.11  perseant  * POSSIBILITY OF SUCH DAMAGE.
     33   1.11  perseant  */
     34   1.11  perseant /*-
     35    1.1   mycroft  * Copyright (c) 1991, 1993
     36    1.1   mycroft  *	The Regents of the University of California.  All rights reserved.
     37    1.1   mycroft  *
     38    1.1   mycroft  * Redistribution and use in source and binary forms, with or without
     39    1.1   mycroft  * modification, are permitted provided that the following conditions
     40    1.1   mycroft  * are met:
     41    1.1   mycroft  * 1. Redistributions of source code must retain the above copyright
     42    1.1   mycroft  *    notice, this list of conditions and the following disclaimer.
     43    1.1   mycroft  * 2. Redistributions in binary form must reproduce the above copyright
     44    1.1   mycroft  *    notice, this list of conditions and the following disclaimer in the
     45    1.1   mycroft  *    documentation and/or other materials provided with the distribution.
     46   1.69       agc  * 3. Neither the name of the University nor the names of its contributors
     47    1.1   mycroft  *    may be used to endorse or promote products derived from this software
     48    1.1   mycroft  *    without specific prior written permission.
     49    1.1   mycroft  *
     50    1.1   mycroft  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     51    1.1   mycroft  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     52    1.1   mycroft  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     53    1.1   mycroft  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     54    1.1   mycroft  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     55    1.1   mycroft  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     56    1.1   mycroft  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     57    1.1   mycroft  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     58    1.1   mycroft  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     59    1.1   mycroft  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     60    1.1   mycroft  * SUCH DAMAGE.
     61    1.1   mycroft  *
     62    1.9      fvdl  *	@(#)lfs.h	8.9 (Berkeley) 5/8/95
     63    1.1   mycroft  */
     64  1.148  dholland /*
     65  1.148  dholland  * Copyright (c) 2002 Networks Associates Technology, Inc.
     66  1.148  dholland  * All rights reserved.
     67  1.148  dholland  *
     68  1.148  dholland  * This software was developed for the FreeBSD Project by Marshall
     69  1.148  dholland  * Kirk McKusick and Network Associates Laboratories, the Security
     70  1.148  dholland  * Research Division of Network Associates, Inc. under DARPA/SPAWAR
     71  1.148  dholland  * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
     72  1.148  dholland  * research program
     73  1.148  dholland  *
     74  1.148  dholland  * Copyright (c) 1982, 1989, 1993
     75  1.148  dholland  *	The Regents of the University of California.  All rights reserved.
     76  1.148  dholland  * (c) UNIX System Laboratories, Inc.
     77  1.148  dholland  * All or some portions of this file are derived from material licensed
     78  1.148  dholland  * to the University of California by American Telephone and Telegraph
     79  1.148  dholland  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
     80  1.148  dholland  * the permission of UNIX System Laboratories, Inc.
     81  1.148  dholland  *
     82  1.148  dholland  * Redistribution and use in source and binary forms, with or without
     83  1.148  dholland  * modification, are permitted provided that the following conditions
     84  1.148  dholland  * are met:
     85  1.148  dholland  * 1. Redistributions of source code must retain the above copyright
     86  1.148  dholland  *    notice, this list of conditions and the following disclaimer.
     87  1.148  dholland  * 2. Redistributions in binary form must reproduce the above copyright
     88  1.148  dholland  *    notice, this list of conditions and the following disclaimer in the
     89  1.148  dholland  *    documentation and/or other materials provided with the distribution.
     90  1.148  dholland  * 3. Neither the name of the University nor the names of its contributors
     91  1.148  dholland  *    may be used to endorse or promote products derived from this software
     92  1.148  dholland  *    without specific prior written permission.
     93  1.148  dholland  *
     94  1.148  dholland  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     95  1.148  dholland  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     96  1.148  dholland  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     97  1.148  dholland  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     98  1.148  dholland  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     99  1.148  dholland  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    100  1.148  dholland  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    101  1.148  dholland  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    102  1.148  dholland  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    103  1.148  dholland  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    104  1.148  dholland  * SUCH DAMAGE.
    105  1.148  dholland  *
    106  1.148  dholland  *	@(#)dinode.h	8.9 (Berkeley) 3/29/95
    107  1.148  dholland  */
    108  1.148  dholland /*
    109  1.148  dholland  * Copyright (c) 1982, 1986, 1989, 1993
    110  1.148  dholland  *	The Regents of the University of California.  All rights reserved.
    111  1.148  dholland  * (c) UNIX System Laboratories, Inc.
    112  1.148  dholland  * All or some portions of this file are derived from material licensed
    113  1.148  dholland  * to the University of California by American Telephone and Telegraph
    114  1.148  dholland  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
    115  1.148  dholland  * the permission of UNIX System Laboratories, Inc.
    116  1.148  dholland  *
    117  1.148  dholland  * Redistribution and use in source and binary forms, with or without
    118  1.148  dholland  * modification, are permitted provided that the following conditions
    119  1.148  dholland  * are met:
    120  1.148  dholland  * 1. Redistributions of source code must retain the above copyright
    121  1.148  dholland  *    notice, this list of conditions and the following disclaimer.
    122  1.148  dholland  * 2. Redistributions in binary form must reproduce the above copyright
    123  1.148  dholland  *    notice, this list of conditions and the following disclaimer in the
    124  1.148  dholland  *    documentation and/or other materials provided with the distribution.
    125  1.148  dholland  * 3. Neither the name of the University nor the names of its contributors
    126  1.148  dholland  *    may be used to endorse or promote products derived from this software
    127  1.148  dholland  *    without specific prior written permission.
    128  1.148  dholland  *
    129  1.148  dholland  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
    130  1.148  dholland  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    131  1.148  dholland  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    132  1.148  dholland  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
    133  1.148  dholland  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    134  1.148  dholland  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    135  1.148  dholland  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    136  1.148  dholland  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    137  1.148  dholland  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    138  1.148  dholland  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    139  1.148  dholland  * SUCH DAMAGE.
    140  1.148  dholland  *
    141  1.148  dholland  *	@(#)dir.h	8.5 (Berkeley) 4/27/95
    142  1.148  dholland  */
    143    1.1   mycroft 
    144  1.149  dholland /*
    145  1.149  dholland  * NOTE: COORDINATE ON-DISK FORMAT CHANGES WITH THE FREEBSD PROJECT.
    146  1.149  dholland  */
    147  1.149  dholland 
    148   1.42      matt #ifndef _UFS_LFS_LFS_H_
    149   1.42      matt #define _UFS_LFS_LFS_H_
    150   1.42      matt 
    151  1.177  dholland #if !defined(_KERNEL) && !defined(_STANDALONE)
    152  1.177  dholland #include <stddef.h> /* for offsetof */
    153  1.177  dholland #endif
    154  1.177  dholland 
    155  1.118        ad #include <sys/rwlock.h>
    156  1.123        ad #include <sys/mutex.h>
    157  1.124        ad #include <sys/queue.h>
    158  1.124        ad #include <sys/condvar.h>
    159  1.140  dholland #include <sys/mount.h>
    160  1.140  dholland #include <sys/pool.h>
    161  1.139  dholland 
    162   1.11  perseant /*
    163   1.11  perseant  * Compile-time options for LFS.
    164   1.11  perseant  */
    165   1.61  perseant #define LFS_IFIND_RETRIES  16
    166   1.61  perseant #define LFS_LOGLENGTH      1024 /* size of debugging log */
    167   1.61  perseant #define LFS_MAX_ACTIVE	   10	/* Dirty segments before ckp forced */
    168   1.39  perseant 
    169   1.11  perseant /*
    170   1.61  perseant  * Fixed filesystem layout parameters
    171   1.11  perseant  */
    172   1.61  perseant #define	LFS_LABELPAD	8192		/* LFS label size */
    173   1.61  perseant #define	LFS_SBPAD	8192		/* LFS superblock size */
    174   1.61  perseant 
    175   1.61  perseant #define	LFS_UNUSED_INUM	0		/* 0: out of band inode number */
    176   1.61  perseant #define	LFS_IFILE_INUM	1		/* 1: IFILE inode number */
    177   1.61  perseant 					/* 2: Root inode number */
    178  1.141  dholland #define	LFS_LOSTFOUNDINO 3		/* 3: lost+found inode number */
    179   1.61  perseant #define	LFS_FIRST_INUM	4		/* 4: first free inode number */
    180   1.61  perseant 
    181  1.145  dholland /*
    182  1.145  dholland  * The root inode is the root of the file system.  Inode 0 can't be used for
    183  1.145  dholland  * normal purposes and historically bad blocks were linked to inode 1, thus
    184  1.145  dholland  * the root inode is 2.  (Inode 1 is no longer used for this purpose, however
    185  1.145  dholland  * numerous dump tapes make this assumption, so we are stuck with it).
    186  1.145  dholland  */
    187  1.145  dholland #define	ULFS_ROOTINO	((ino_t)2)
    188  1.145  dholland 
    189  1.145  dholland /*
    190  1.145  dholland  * The Whiteout inode# is a dummy non-zero inode number which will
    191  1.145  dholland  * never be allocated to a real file.  It is used as a place holder
    192  1.145  dholland  * in the directory entry which has been tagged as a LFS_DT_WHT entry.
    193  1.145  dholland  * See the comments about ULFS_ROOTINO above.
    194  1.145  dholland  */
    195  1.145  dholland #define	ULFS_WINO	((ino_t)1)
    196  1.145  dholland 
    197  1.145  dholland 
    198   1.61  perseant #define	LFS_V1_SUMMARY_SIZE	512     /* V1 fixed summary size */
    199   1.61  perseant #define	LFS_DFL_SUMMARY_SIZE	512	/* Default summary size */
    200   1.61  perseant 
    201   1.92  christos #define LFS_MAXNAMLEN	255		/* maximum name length in a dir */
    202   1.92  christos 
    203  1.140  dholland #define ULFS_NXADDR	2
    204  1.140  dholland #define	ULFS_NDADDR	12		/* Direct addresses in inode. */
    205  1.140  dholland #define	ULFS_NIADDR	3		/* Indirect addresses in inode. */
    206  1.140  dholland 
    207  1.140  dholland /*
    208  1.140  dholland  * Adjustable filesystem parameters
    209  1.140  dholland  */
    210   1.37  perseant #ifndef LFS_ATIME_IFILE
    211   1.61  perseant # define LFS_ATIME_IFILE 0 /* Store atime info in ifile (optional in LFSv1) */
    212   1.37  perseant #endif
    213   1.61  perseant #define LFS_MARKV_MAXBLKCNT	65536	/* Max block count for lfs_markv() */
    214   1.61  perseant 
    215   1.35  perseant /*
    216  1.142  dholland  * Directories
    217  1.142  dholland  */
    218  1.142  dholland 
    219  1.142  dholland /*
    220  1.146  dholland  * A directory consists of some number of blocks of LFS_DIRBLKSIZ
    221  1.146  dholland  * bytes, where LFS_DIRBLKSIZ is chosen such that it can be transferred
    222  1.146  dholland  * to disk in a single atomic operation (e.g. 512 bytes on most machines).
    223  1.146  dholland  *
    224  1.146  dholland  * Each LFS_DIRBLKSIZ byte block contains some number of directory entry
    225  1.146  dholland  * structures, which are of variable length.  Each directory entry has
    226  1.146  dholland  * a struct lfs_direct at the front of it, containing its inode number,
    227  1.146  dholland  * the length of the entry, and the length of the name contained in
    228  1.146  dholland  * the entry.  These are followed by the name padded to a 4 byte boundary.
    229  1.146  dholland  * All names are guaranteed null terminated.
    230  1.146  dholland  * The maximum length of a name in a directory is LFS_MAXNAMLEN.
    231  1.146  dholland  *
    232  1.146  dholland  * The macro DIRSIZ(fmt, dp) gives the amount of space required to represent
    233  1.146  dholland  * a directory entry.  Free space in a directory is represented by
    234  1.146  dholland  * entries which have dp->d_reclen > DIRSIZ(fmt, dp).  All LFS_DIRBLKSIZ bytes
    235  1.146  dholland  * in a directory block are claimed by the directory entries.  This
    236  1.146  dholland  * usually results in the last entry in a directory having a large
    237  1.146  dholland  * dp->d_reclen.  When entries are deleted from a directory, the
    238  1.146  dholland  * space is returned to the previous entry in the same directory
    239  1.146  dholland  * block by increasing its dp->d_reclen.  If the first entry of
    240  1.146  dholland  * a directory block is free, then its dp->d_ino is set to 0.
    241  1.146  dholland  * Entries other than the first in a directory do not normally have
    242  1.146  dholland  * dp->d_ino set to 0.
    243  1.146  dholland  */
    244  1.146  dholland 
    245  1.146  dholland /*
    246  1.146  dholland  * Directory block size.
    247  1.146  dholland  */
    248  1.146  dholland #undef	LFS_DIRBLKSIZ
    249  1.146  dholland #define	LFS_DIRBLKSIZ	DEV_BSIZE
    250  1.146  dholland 
    251  1.146  dholland /*
    252  1.146  dholland  * Convert between stat structure types and directory types.
    253  1.146  dholland  */
    254  1.146  dholland #define	LFS_IFTODT(mode)	(((mode) & 0170000) >> 12)
    255  1.146  dholland #define	LFS_DTTOIF(dirtype)	((dirtype) << 12)
    256  1.146  dholland 
    257  1.146  dholland /*
    258  1.146  dholland  * The LFS_DIRSIZ macro gives the minimum record length which will hold
    259  1.146  dholland  * the directory entry.  This requires the amount of space in struct lfs_direct
    260  1.146  dholland  * without the d_name field, plus enough space for the name with a terminating
    261  1.146  dholland  * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary.
    262  1.146  dholland  */
    263  1.146  dholland #define	LFS_DIRECTSIZ(namlen) \
    264  1.146  dholland 	((sizeof(struct lfs_direct) - (LFS_MAXNAMLEN+1)) + (((namlen)+1 + 3) &~ 3))
    265  1.146  dholland 
    266  1.146  dholland #if (BYTE_ORDER == LITTLE_ENDIAN)
    267  1.146  dholland #define LFS_DIRSIZ(oldfmt, dp, needswap)	\
    268  1.146  dholland     (((oldfmt) && !(needswap)) ?		\
    269  1.146  dholland     LFS_DIRECTSIZ((dp)->d_type) : LFS_DIRECTSIZ((dp)->d_namlen))
    270  1.146  dholland #else
    271  1.146  dholland #define LFS_DIRSIZ(oldfmt, dp, needswap)	\
    272  1.146  dholland     (((oldfmt) && (needswap)) ?			\
    273  1.146  dholland     LFS_DIRECTSIZ((dp)->d_type) : LFS_DIRECTSIZ((dp)->d_namlen))
    274  1.146  dholland #endif
    275  1.146  dholland 
    276  1.147  dholland /* Constants for the first argument of LFS_DIRSIZ */
    277  1.147  dholland #define LFS_OLDDIRFMT	1
    278  1.147  dholland #define LFS_NEWDIRFMT	0
    279  1.147  dholland 
    280  1.146  dholland /*
    281  1.142  dholland  * Theoretically, directories can be more than 2Gb in length; however, in
    282  1.142  dholland  * practice this seems unlikely. So, we define the type doff_t as a 32-bit
    283  1.142  dholland  * quantity to keep down the cost of doing lookup on a 32-bit machine.
    284  1.142  dholland  */
    285  1.142  dholland #define	doff_t		int32_t
    286  1.142  dholland #define	lfs_doff_t	int32_t
    287  1.155  dholland #define	LFS_MAXDIRSIZE	(0x7fffffff)
    288  1.142  dholland 
    289  1.145  dholland /*
    290  1.145  dholland  * File types for d_type
    291  1.145  dholland  */
    292  1.145  dholland #define	LFS_DT_UNKNOWN	 0
    293  1.145  dholland #define	LFS_DT_FIFO	 1
    294  1.145  dholland #define	LFS_DT_CHR	 2
    295  1.145  dholland #define	LFS_DT_DIR	 4
    296  1.145  dholland #define	LFS_DT_BLK	 6
    297  1.145  dholland #define	LFS_DT_REG	 8
    298  1.145  dholland #define	LFS_DT_LNK	10
    299  1.145  dholland #define	LFS_DT_SOCK	12
    300  1.145  dholland #define	LFS_DT_WHT	14
    301  1.145  dholland 
    302  1.145  dholland /*
    303  1.150  dholland  * (See notes above)
    304  1.145  dholland  */
    305  1.145  dholland #define d_ino d_fileno
    306  1.145  dholland struct lfs_direct {
    307  1.145  dholland 	u_int32_t d_fileno;		/* inode number of entry */
    308  1.145  dholland 	u_int16_t d_reclen;		/* length of this record */
    309  1.145  dholland 	u_int8_t  d_type; 		/* file type, see below */
    310  1.145  dholland 	u_int8_t  d_namlen;		/* length of string in d_name */
    311  1.145  dholland 	char	  d_name[LFS_MAXNAMLEN + 1];/* name with length <= LFS_MAXNAMLEN */
    312  1.145  dholland };
    313  1.145  dholland 
    314  1.145  dholland /*
    315  1.145  dholland  * Template for manipulating directories.  Should use struct lfs_direct's,
    316  1.145  dholland  * but the name field is LFS_MAXNAMLEN - 1, and this just won't do.
    317  1.145  dholland  */
    318  1.145  dholland struct lfs_dirtemplate {
    319  1.145  dholland 	u_int32_t	dot_ino;
    320  1.145  dholland 	int16_t		dot_reclen;
    321  1.145  dholland 	u_int8_t	dot_type;
    322  1.145  dholland 	u_int8_t	dot_namlen;
    323  1.145  dholland 	char		dot_name[4];	/* must be multiple of 4 */
    324  1.145  dholland 	u_int32_t	dotdot_ino;
    325  1.145  dholland 	int16_t		dotdot_reclen;
    326  1.145  dholland 	u_int8_t	dotdot_type;
    327  1.145  dholland 	u_int8_t	dotdot_namlen;
    328  1.145  dholland 	char		dotdot_name[4];	/* ditto */
    329  1.145  dholland };
    330  1.145  dholland 
    331  1.145  dholland /*
    332  1.145  dholland  * This is the old format of directories, sans type element.
    333  1.145  dholland  */
    334  1.145  dholland struct lfs_odirtemplate {
    335  1.145  dholland 	u_int32_t	dot_ino;
    336  1.145  dholland 	int16_t		dot_reclen;
    337  1.145  dholland 	u_int16_t	dot_namlen;
    338  1.145  dholland 	char		dot_name[4];	/* must be multiple of 4 */
    339  1.145  dholland 	u_int32_t	dotdot_ino;
    340  1.145  dholland 	int16_t		dotdot_reclen;
    341  1.145  dholland 	u_int16_t	dotdot_namlen;
    342  1.145  dholland 	char		dotdot_name[4];	/* ditto */
    343  1.145  dholland };
    344  1.145  dholland 
    345  1.142  dholland /*
    346  1.143  dholland  * Inodes
    347  1.143  dholland  */
    348  1.143  dholland 
    349  1.143  dholland /*
    350  1.151  dholland  * A dinode contains all the meta-data associated with a LFS file.
    351  1.143  dholland  * This structure defines the on-disk format of a dinode. Since
    352  1.143  dholland  * this structure describes an on-disk structure, all its fields
    353  1.143  dholland  * are defined by types with precise widths.
    354  1.143  dholland  */
    355  1.143  dholland 
    356  1.143  dholland struct ulfs1_dinode {
    357  1.143  dholland 	u_int16_t	di_mode;	/*   0: IFMT, permissions; see below. */
    358  1.143  dholland 	int16_t		di_nlink;	/*   2: File link count. */
    359  1.151  dholland 	u_int32_t	di_inumber;	/*   4: Inode number. */
    360  1.143  dholland 	u_int64_t	di_size;	/*   8: File byte count. */
    361  1.143  dholland 	int32_t		di_atime;	/*  16: Last access time. */
    362  1.143  dholland 	int32_t		di_atimensec;	/*  20: Last access time. */
    363  1.143  dholland 	int32_t		di_mtime;	/*  24: Last modified time. */
    364  1.143  dholland 	int32_t		di_mtimensec;	/*  28: Last modified time. */
    365  1.143  dholland 	int32_t		di_ctime;	/*  32: Last inode change time. */
    366  1.143  dholland 	int32_t		di_ctimensec;	/*  36: Last inode change time. */
    367  1.143  dholland 	int32_t		di_db[ULFS_NDADDR]; /*  40: Direct disk blocks. */
    368  1.143  dholland 	int32_t		di_ib[ULFS_NIADDR]; /*  88: Indirect disk blocks. */
    369  1.143  dholland 	u_int32_t	di_flags;	/* 100: Status flags (chflags). */
    370  1.143  dholland 	u_int32_t	di_blocks;	/* 104: Blocks actually held. */
    371  1.143  dholland 	int32_t		di_gen;		/* 108: Generation number. */
    372  1.143  dholland 	u_int32_t	di_uid;		/* 112: File owner. */
    373  1.143  dholland 	u_int32_t	di_gid;		/* 116: File group. */
    374  1.143  dholland 	u_int64_t	di_modrev;	/* 120: i_modrev for NFSv4 */
    375  1.143  dholland };
    376  1.143  dholland 
    377  1.143  dholland struct ulfs2_dinode {
    378  1.143  dholland 	u_int16_t	di_mode;	/*   0: IFMT, permissions; see below. */
    379  1.143  dholland 	int16_t		di_nlink;	/*   2: File link count. */
    380  1.143  dholland 	u_int32_t	di_uid;		/*   4: File owner. */
    381  1.143  dholland 	u_int32_t	di_gid;		/*   8: File group. */
    382  1.143  dholland 	u_int32_t	di_blksize;	/*  12: Inode blocksize. */
    383  1.143  dholland 	u_int64_t	di_size;	/*  16: File byte count. */
    384  1.143  dholland 	u_int64_t	di_blocks;	/*  24: Bytes actually held. */
    385  1.143  dholland 	int64_t		di_atime;	/*  32: Last access time. */
    386  1.143  dholland 	int64_t		di_mtime;	/*  40: Last modified time. */
    387  1.143  dholland 	int64_t		di_ctime;	/*  48: Last inode change time. */
    388  1.143  dholland 	int64_t		di_birthtime;	/*  56: Inode creation time. */
    389  1.143  dholland 	int32_t		di_mtimensec;	/*  64: Last modified time. */
    390  1.143  dholland 	int32_t		di_atimensec;	/*  68: Last access time. */
    391  1.143  dholland 	int32_t		di_ctimensec;	/*  72: Last inode change time. */
    392  1.143  dholland 	int32_t		di_birthnsec;	/*  76: Inode creation time. */
    393  1.143  dholland 	int32_t		di_gen;		/*  80: Generation number. */
    394  1.143  dholland 	u_int32_t	di_kernflags;	/*  84: Kernel flags. */
    395  1.143  dholland 	u_int32_t	di_flags;	/*  88: Status flags (chflags). */
    396  1.143  dholland 	int32_t		di_extsize;	/*  92: External attributes block. */
    397  1.143  dholland 	int64_t		di_extb[ULFS_NXADDR];/* 96: External attributes block. */
    398  1.143  dholland 	int64_t		di_db[ULFS_NDADDR]; /* 112: Direct disk blocks. */
    399  1.143  dholland 	int64_t		di_ib[ULFS_NIADDR]; /* 208: Indirect disk blocks. */
    400  1.143  dholland 	u_int64_t	di_modrev;	/* 232: i_modrev for NFSv4 */
    401  1.163  dholland 	u_int32_t	di_inumber;	/* 240: Inode number */
    402  1.163  dholland 	u_int32_t	di_spare[3];	/* 244: Reserved; currently unused */
    403  1.143  dholland };
    404  1.143  dholland 
    405  1.143  dholland /*
    406  1.143  dholland  * The di_db fields may be overlaid with other information for
    407  1.143  dholland  * file types that do not have associated disk storage. Block
    408  1.143  dholland  * and character devices overlay the first data block with their
    409  1.143  dholland  * dev_t value. Short symbolic links place their path in the
    410  1.143  dholland  * di_db area.
    411  1.143  dholland  */
    412  1.143  dholland #define	di_rdev		di_db[0]
    413  1.143  dholland 
    414  1.143  dholland /* Size of the on-disk inode. */
    415  1.143  dholland #define	LFS_DINODE1_SIZE	(sizeof(struct ulfs1_dinode))	/* 128 */
    416  1.143  dholland #define	LFS_DINODE2_SIZE	(sizeof(struct ulfs2_dinode))
    417  1.143  dholland 
    418  1.144  dholland /* File types, found in the upper bits of di_mode. */
    419  1.144  dholland #define	LFS_IFMT	0170000		/* Mask of file type. */
    420  1.144  dholland #define	LFS_IFIFO	0010000		/* Named pipe (fifo). */
    421  1.144  dholland #define	LFS_IFCHR	0020000		/* Character device. */
    422  1.144  dholland #define	LFS_IFDIR	0040000		/* Directory file. */
    423  1.144  dholland #define	LFS_IFBLK	0060000		/* Block device. */
    424  1.144  dholland #define	LFS_IFREG	0100000		/* Regular file. */
    425  1.144  dholland #define	LFS_IFLNK	0120000		/* Symbolic link. */
    426  1.144  dholland #define	LFS_IFSOCK	0140000		/* UNIX domain socket. */
    427  1.144  dholland #define	LFS_IFWHT	0160000		/* Whiteout. */
    428  1.144  dholland 
    429  1.143  dholland /*
    430   1.61  perseant  * "struct buf" associated definitions
    431   1.35  perseant  */
    432   1.35  perseant 
    433   1.61  perseant /* Unassigned disk addresses. */
    434   1.61  perseant #define	UNASSIGNED	-1
    435   1.61  perseant #define UNWRITTEN	-2
    436   1.61  perseant 
    437   1.61  perseant /* Unused logical block number */
    438   1.61  perseant #define LFS_UNUSED_LBN	-1
    439   1.46  perseant 
    440   1.61  perseant /*
    441   1.61  perseant  * "struct inode" associated definitions
    442   1.61  perseant  */
    443   1.61  perseant 
    444   1.24  perseant /* For convenience */
    445   1.73   mycroft #define IN_ALLMOD (IN_MODIFIED|IN_ACCESS|IN_CHANGE|IN_UPDATE|IN_MODIFY|IN_ACCESSED|IN_CLEANING)
    446   1.37  perseant 
    447   1.46  perseant /*
    448   1.61  perseant  * On-disk and in-memory checkpoint segment usage structure.
    449   1.61  perseant  */
    450    1.1   mycroft typedef struct segusage SEGUSE;
    451    1.1   mycroft struct segusage {
    452   1.37  perseant 	u_int32_t su_nbytes;		/* 0: number of live bytes */
    453   1.37  perseant 	u_int32_t su_olastmod;		/* 4: SEGUSE last modified timestamp */
    454   1.37  perseant 	u_int16_t su_nsums;		/* 8: number of summaries in segment */
    455   1.37  perseant 	u_int16_t su_ninos;		/* 10: number of inode blocks in seg */
    456   1.37  perseant 
    457   1.37  perseant #define	SEGUSE_ACTIVE		0x01	/*  segment currently being written */
    458   1.37  perseant #define	SEGUSE_DIRTY		0x02	/*  segment has data in it */
    459   1.37  perseant #define	SEGUSE_SUPERBLOCK	0x04	/*  segment contains a superblock */
    460   1.49  perseant #define SEGUSE_ERROR		0x08	/*  cleaner: do not clean segment */
    461   1.49  perseant #define SEGUSE_EMPTY		0x10	/*  segment is empty */
    462   1.86  perseant #define SEGUSE_INVAL		0x20	/*  segment is invalid */
    463   1.37  perseant 	u_int32_t su_flags;		/* 12: segment flags */
    464   1.37  perseant 	u_int64_t su_lastmod;		/* 16: last modified timestamp */
    465    1.1   mycroft };
    466    1.1   mycroft 
    467   1.37  perseant typedef struct segusage_v1 SEGUSE_V1;
    468   1.37  perseant struct segusage_v1 {
    469   1.37  perseant 	u_int32_t su_nbytes;		/* 0: number of live bytes */
    470   1.37  perseant 	u_int32_t su_lastmod;		/* 4: SEGUSE last modified timestamp */
    471   1.37  perseant 	u_int16_t su_nsums;		/* 8: number of summaries in segment */
    472   1.37  perseant 	u_int16_t su_ninos;		/* 10: number of inode blocks in seg */
    473   1.49  perseant 	u_int32_t su_flags;		/* 12: segment flags  */
    474   1.37  perseant };
    475   1.37  perseant 
    476   1.61  perseant /*
    477   1.61  perseant  * On-disk file information.  One per file with data blocks in the segment.
    478  1.178  dholland  *
    479  1.178  dholland  * The FINFO structure is a header; it is followed by fi_nblocks block
    480  1.178  dholland  * pointers, which are logical block numbers of the file. (These are the
    481  1.178  dholland  * blocks of the file present in this segment.)
    482   1.61  perseant  */
    483  1.178  dholland 
    484  1.178  dholland typedef struct finfo64 FINFO64;
    485  1.178  dholland struct finfo64 {
    486  1.178  dholland 	u_int32_t fi_nblocks;		/* number of blocks */
    487  1.178  dholland 	u_int32_t fi_version;		/* version number */
    488  1.178  dholland 	u_int64_t fi_ino;		/* inode number */
    489  1.178  dholland 	u_int32_t fi_lastlength;	/* length of last block in array */
    490  1.178  dholland 	u_int32_t fi_pad;		/* unused */
    491  1.178  dholland };
    492  1.178  dholland 
    493  1.178  dholland typedef struct finfo32 FINFO32;
    494  1.178  dholland struct finfo32 {
    495    1.3       cgd 	u_int32_t fi_nblocks;		/* number of blocks */
    496    1.3       cgd 	u_int32_t fi_version;		/* version number */
    497    1.3       cgd 	u_int32_t fi_ino;		/* inode number */
    498    1.9      fvdl 	u_int32_t fi_lastlength;	/* length of last block in array */
    499    1.1   mycroft };
    500  1.178  dholland 
    501  1.178  dholland typedef union finfo {
    502  1.178  dholland 	struct finfo64 u_64;
    503  1.178  dholland 	struct finfo32 u_32;
    504  1.178  dholland } FINFO;
    505   1.37  perseant 
    506   1.61  perseant /*
    507   1.61  perseant  * Index file inode entries.
    508   1.61  perseant  */
    509  1.176  dholland 
    510  1.176  dholland /* magic value for daddrs */
    511  1.176  dholland #define	LFS_UNUSED_DADDR	0	/* out-of-band daddr */
    512  1.176  dholland /* magic value for if_nextfree */
    513  1.176  dholland #define LFS_ORPHAN_NEXTFREE	(~(u_int32_t)0) /* indicate orphaned file */
    514  1.176  dholland 
    515  1.176  dholland typedef struct ifile64 IFILE64;
    516  1.176  dholland struct ifile64 {
    517  1.176  dholland 	u_int32_t if_version;		/* inode version number */
    518  1.176  dholland 	u_int32_t if_pad;		/* 64-bit alignment padding */
    519  1.176  dholland 	int64_t	  if_daddr;		/* inode disk address */
    520  1.176  dholland 	u_int64_t if_nextfree;		/* next-unallocated inode */
    521  1.176  dholland 	u_int32_t if_atime_sec;		/* Last access time, seconds */
    522  1.176  dholland 	u_int32_t if_atime_nsec;	/* and nanoseconds */
    523  1.176  dholland };
    524  1.176  dholland 
    525  1.176  dholland typedef struct ifile32 IFILE32;
    526  1.176  dholland struct ifile32 {
    527   1.61  perseant 	u_int32_t if_version;		/* inode version number */
    528   1.61  perseant 	int32_t	  if_daddr;		/* inode disk address */
    529   1.91      yamt 	u_int32_t if_nextfree;		/* next-unallocated inode */
    530   1.61  perseant 	u_int32_t if_atime_sec;		/* Last access time, seconds */
    531   1.61  perseant 	u_int32_t if_atime_nsec;	/* and nanoseconds */
    532   1.61  perseant };
    533   1.61  perseant 
    534   1.61  perseant typedef struct ifile_v1 IFILE_V1;
    535   1.61  perseant struct ifile_v1 {
    536   1.61  perseant 	u_int32_t if_version;		/* inode version number */
    537   1.61  perseant 	int32_t	  if_daddr;		/* inode disk address */
    538   1.91      yamt 	u_int32_t if_nextfree;		/* next-unallocated inode */
    539   1.61  perseant #if LFS_ATIME_IFILE
    540  1.176  dholland #error "this cannot work"
    541   1.61  perseant 	struct timespec if_atime;	/* Last access time */
    542   1.61  perseant #endif
    543   1.61  perseant };
    544   1.61  perseant 
    545   1.61  perseant /*
    546  1.176  dholland  * Note: struct ifile_v1 is often handled by accessing the first three
    547  1.176  dholland  * fields of struct ifile32. (XXX: Blah.  This should be cleaned up as
    548  1.176  dholland  * it may in some cases violate the strict-aliasing rules.)
    549  1.176  dholland  */
    550  1.176  dholland typedef union ifile {
    551  1.176  dholland 	struct ifile64 u_64;
    552  1.176  dholland 	struct ifile32 u_32;
    553  1.176  dholland 	struct ifile_v1 u_v1;
    554  1.176  dholland } IFILE;
    555  1.176  dholland 
    556  1.176  dholland /*
    557   1.61  perseant  * Cleaner information structure.  This resides in the ifile and is used
    558   1.61  perseant  * to pass information from the kernel to the cleaner.
    559   1.61  perseant  */
    560  1.175  dholland 
    561  1.175  dholland /* flags for ->flags */
    562  1.114  perseant #define LFS_CLEANER_MUST_CLEAN	0x01
    563  1.175  dholland 
    564  1.175  dholland typedef struct _cleanerinfo32 {
    565  1.175  dholland 	u_int32_t clean;		/* 0: number of clean segments */
    566  1.175  dholland 	u_int32_t dirty;		/* 4: number of dirty segments */
    567  1.175  dholland 	int32_t   bfree;		/* 8: disk blocks free */
    568  1.175  dholland 	int32_t	  avail;		/* 12: disk blocks available */
    569  1.175  dholland 	u_int32_t free_head;		/* 16: head of the inode free list */
    570  1.175  dholland 	u_int32_t free_tail;		/* 20: tail of the inode free list */
    571  1.175  dholland 	u_int32_t flags;		/* 24: status word from the kernel */
    572  1.175  dholland } CLEANERINFO32;
    573  1.175  dholland 
    574  1.175  dholland typedef struct _cleanerinfo64 {
    575  1.175  dholland 	u_int32_t clean;		/* 0: number of clean segments */
    576  1.175  dholland 	u_int32_t dirty;		/* 4: number of dirty segments */
    577  1.175  dholland 	int64_t   bfree;		/* 8: disk blocks free */
    578  1.175  dholland 	int64_t	  avail;		/* 16: disk blocks available */
    579  1.175  dholland 	u_int64_t free_head;		/* 24: head of the inode free list */
    580  1.175  dholland 	u_int64_t free_tail;		/* 32: tail of the inode free list */
    581  1.175  dholland 	u_int32_t flags;		/* 40: status word from the kernel */
    582  1.175  dholland 	u_int32_t pad;			/* 44: must be 64-bit aligned */
    583  1.175  dholland } CLEANERINFO64;
    584  1.175  dholland 
    585  1.175  dholland /* this must not go to disk directly of course */
    586  1.175  dholland typedef union _cleanerinfo {
    587  1.175  dholland 	CLEANERINFO32 u_32;
    588  1.175  dholland 	CLEANERINFO64 u_64;
    589   1.61  perseant } CLEANERINFO;
    590   1.61  perseant 
    591   1.61  perseant /*
    592   1.61  perseant  * On-disk segment summary information
    593   1.61  perseant  */
    594  1.177  dholland 
    595  1.177  dholland /* magic value for ss_magic */
    596  1.177  dholland #define SS_MAGIC	0x061561
    597  1.177  dholland 
    598  1.177  dholland /* flags for ss_flags */
    599  1.177  dholland #define	SS_DIROP	0x01		/* segment begins a dirop */
    600  1.177  dholland #define	SS_CONT		0x02		/* more partials to finish this write*/
    601  1.177  dholland #define	SS_CLEAN	0x04		/* written by the cleaner */
    602  1.177  dholland #define	SS_RFW		0x08		/* written by the roll-forward agent */
    603  1.177  dholland #define	SS_RECLAIM	0x10		/* written by the roll-forward agent */
    604  1.177  dholland 
    605   1.61  perseant typedef struct segsum_v1 SEGSUM_V1;
    606   1.61  perseant struct segsum_v1 {
    607   1.61  perseant 	u_int32_t ss_sumsum;		/* 0: check sum of summary block */
    608   1.61  perseant 	u_int32_t ss_datasum;		/* 4: check sum of data */
    609   1.61  perseant 	u_int32_t ss_magic;		/* 8: segment summary magic number */
    610   1.61  perseant 	int32_t	  ss_next;		/* 12: next segment */
    611   1.61  perseant 	u_int32_t ss_create;		/* 16: creation time stamp */
    612   1.61  perseant 	u_int16_t ss_nfinfo;		/* 20: number of file info structures */
    613   1.61  perseant 	u_int16_t ss_ninos;		/* 22: number of inodes in summary */
    614   1.61  perseant 	u_int16_t ss_flags;		/* 24: used for directory operations */
    615   1.61  perseant 	u_int16_t ss_pad;		/* 26: extra space */
    616   1.61  perseant 	/* FINFO's and inode daddr's... */
    617   1.61  perseant };
    618   1.61  perseant 
    619  1.177  dholland typedef struct segsum32 SEGSUM32;
    620  1.177  dholland struct segsum32 {
    621   1.61  perseant 	u_int32_t ss_sumsum;		/* 0: check sum of summary block */
    622   1.61  perseant 	u_int32_t ss_datasum;		/* 4: check sum of data */
    623   1.61  perseant 	u_int32_t ss_magic;		/* 8: segment summary magic number */
    624  1.169  dholland 	int32_t	  ss_next;		/* 12: next segment (disk address) */
    625   1.61  perseant 	u_int32_t ss_ident;		/* 16: roll-forward fsid */
    626   1.61  perseant 	u_int16_t ss_nfinfo;		/* 20: number of file info structures */
    627   1.61  perseant 	u_int16_t ss_ninos;		/* 22: number of inodes in summary */
    628   1.61  perseant 	u_int16_t ss_flags;		/* 24: used for directory operations */
    629  1.135  perseant 	u_int8_t  ss_pad[2];		/* 26: extra space */
    630  1.135  perseant 	u_int32_t ss_reclino;           /* 28: inode being reclaimed */
    631   1.61  perseant 	u_int64_t ss_serial;		/* 32: serial number */
    632   1.61  perseant 	u_int64_t ss_create;		/* 40: time stamp */
    633   1.61  perseant 	/* FINFO's and inode daddr's... */
    634   1.61  perseant };
    635   1.61  perseant 
    636  1.177  dholland typedef struct segsum64 SEGSUM64;
    637  1.177  dholland struct segsum64 {
    638  1.177  dholland 	u_int32_t ss_sumsum;		/* 0: check sum of summary block */
    639  1.177  dholland 	u_int32_t ss_datasum;		/* 4: check sum of data */
    640  1.177  dholland 	u_int32_t ss_magic;		/* 8: segment summary magic number */
    641  1.177  dholland 	u_int32_t ss_ident;		/* 12: roll-forward fsid */
    642  1.177  dholland 	int64_t	  ss_next;		/* 16: next segment (disk address) */
    643  1.177  dholland 	u_int16_t ss_nfinfo;		/* 24: number of file info structures */
    644  1.177  dholland 	u_int16_t ss_ninos;		/* 26: number of inodes in summary */
    645  1.177  dholland 	u_int16_t ss_flags;		/* 28: used for directory operations */
    646  1.177  dholland 	u_int8_t  ss_pad[2];		/* 30: extra space */
    647  1.177  dholland 	u_int64_t ss_reclino;           /* 32: inode being reclaimed */
    648  1.177  dholland 	u_int64_t ss_serial;		/* 40: serial number */
    649  1.177  dholland 	u_int64_t ss_create;		/* 48: time stamp */
    650  1.177  dholland 	/* FINFO's and inode daddr's... */
    651  1.177  dholland };
    652  1.177  dholland 
    653  1.177  dholland typedef union segsum SEGSUM;
    654  1.177  dholland union segsum {
    655  1.177  dholland 	struct segsum64 u_64;
    656  1.177  dholland 	struct segsum32 u_32;
    657  1.177  dholland 	struct segsum_v1 u_v1;
    658  1.177  dholland };
    659  1.177  dholland 
    660   1.61  perseant 
    661   1.61  perseant /*
    662   1.61  perseant  * On-disk super block.
    663  1.171  dholland  *
    664  1.171  dholland  * We have separate superblock structures for the 32-bit and 64-bit
    665  1.171  dholland  * LFS, and accessor functions to hide the differences.
    666  1.171  dholland  *
    667  1.171  dholland  * For lfs64, the format version is always 2; version 1 lfs is old.
    668  1.171  dholland  * For both, the inode format version is 0; for lfs32 this selects the
    669  1.171  dholland  * same 32-bit inode as always, and for lfs64 this selects the larger
    670  1.171  dholland  * 64-bit inode structure we got from ffsv2.
    671  1.171  dholland  *
    672  1.171  dholland  * In lfs64:
    673  1.171  dholland  *   - inode numbers are still 32 bit
    674  1.171  dholland  *   - segments may not be larger than 4G (counted in bytes)
    675  1.171  dholland  *   - there may not be more than 2^32 (or perhaps 2^31) segments
    676  1.171  dholland  *   - the total volume size is limited to 2^63 frags and/or 2^63
    677  1.171  dholland  *     disk blocks, and probably in practice 2^63 bytes.
    678   1.61  perseant  */
    679  1.171  dholland 
    680  1.171  dholland #define	       LFS_MAGIC       		0x070162
    681  1.171  dholland #define        LFS_MAGIC_SWAPPED	0x62010700
    682  1.171  dholland 
    683  1.171  dholland #define        LFS64_MAGIC     		0x19620701
    684  1.171  dholland #define        LFS64_MAGIC_SWAPPED      0x01076219
    685  1.171  dholland 
    686  1.171  dholland #define	       LFS_VERSION     		2
    687  1.171  dholland 
    688  1.171  dholland #define LFS_MIN_SBINTERVAL     5	/* min superblock segment spacing */
    689  1.171  dholland #define LFS_MAXNUMSB	       10	/* max number of superblocks */
    690  1.171  dholland 
    691  1.171  dholland /* flags for dlfs_pflags */
    692  1.171  dholland #define LFS_PF_CLEAN 0x1
    693  1.171  dholland 
    694  1.171  dholland /* Inode format versions */
    695  1.171  dholland #define LFS_44INODEFMT 0
    696  1.171  dholland #define LFS_MAXINODEFMT 0
    697  1.171  dholland 
    698   1.10        pk struct dlfs {
    699   1.49  perseant 	u_int32_t dlfs_magic;	  /* 0: magic number */
    700   1.49  perseant 	u_int32_t dlfs_version;	  /* 4: version number */
    701   1.49  perseant 
    702   1.49  perseant 	u_int32_t dlfs_size;	  /* 8: number of blocks in fs (v1) */
    703   1.49  perseant 				  /*	number of frags in fs (v2) */
    704   1.49  perseant 	u_int32_t dlfs_ssize;	  /* 12: number of blocks per segment (v1) */
    705   1.49  perseant 				  /*	 number of bytes per segment (v2) */
    706   1.49  perseant 	u_int32_t dlfs_dsize;	  /* 16: number of disk blocks in fs */
    707   1.49  perseant 	u_int32_t dlfs_bsize;	  /* 20: file system block size */
    708   1.49  perseant 	u_int32_t dlfs_fsize;	  /* 24: size of frag blocks in fs */
    709   1.49  perseant 	u_int32_t dlfs_frag;	  /* 28: number of frags in a block in fs */
    710    1.1   mycroft 
    711    1.1   mycroft /* Checkpoint region. */
    712  1.169  dholland 	u_int32_t dlfs_freehd;	  /* 32: start of the free inode list */
    713  1.168  dholland 	int32_t   dlfs_bfree;	  /* 36: number of free frags */
    714   1.49  perseant 	u_int32_t dlfs_nfiles;	  /* 40: number of allocated inodes */
    715   1.49  perseant 	int32_t	  dlfs_avail;	  /* 44: blocks available for writing */
    716   1.49  perseant 	int32_t	  dlfs_uinodes;	  /* 48: inodes in cache not yet on disk */
    717   1.49  perseant 	int32_t	  dlfs_idaddr;	  /* 52: inode file disk address */
    718   1.49  perseant 	u_int32_t dlfs_ifile;	  /* 56: inode file inode number */
    719   1.54  perseant 	int32_t	  dlfs_lastseg;	  /* 60: address of last segment written */
    720   1.54  perseant 	int32_t	  dlfs_nextseg;	  /* 64: address of next segment to write */
    721   1.54  perseant 	int32_t	  dlfs_curseg;	  /* 68: current segment being written */
    722   1.54  perseant 	int32_t	  dlfs_offset;	  /* 72: offset in curseg for next partial */
    723   1.49  perseant 	int32_t	  dlfs_lastpseg;  /* 76: address of last partial written */
    724   1.49  perseant 	u_int32_t dlfs_inopf;	  /* 80: v1: time stamp; v2: inodes per frag */
    725    1.1   mycroft 
    726    1.1   mycroft /* These are configuration parameters. */
    727   1.49  perseant 	u_int32_t dlfs_minfree;	  /* 84: minimum percentage of free blocks */
    728    1.1   mycroft 
    729    1.1   mycroft /* These fields can be computed from the others. */
    730   1.49  perseant 	u_int64_t dlfs_maxfilesize; /* 88: maximum representable file size */
    731  1.168  dholland 	u_int32_t dlfs_fsbpseg;	    /* 96: frags (fsb) per segment */
    732   1.49  perseant 	u_int32_t dlfs_inopb;	  /* 100: inodes per block */
    733   1.49  perseant 	u_int32_t dlfs_ifpb;	  /* 104: IFILE entries per block */
    734   1.49  perseant 	u_int32_t dlfs_sepb;	  /* 108: SEGUSE entries per block */
    735   1.49  perseant 	u_int32_t dlfs_nindir;	  /* 112: indirect pointers per block */
    736   1.49  perseant 	u_int32_t dlfs_nseg;	  /* 116: number of segments */
    737   1.49  perseant 	u_int32_t dlfs_nspf;	  /* 120: number of sectors per fragment */
    738   1.49  perseant 	u_int32_t dlfs_cleansz;	  /* 124: cleaner info size in blocks */
    739   1.49  perseant 	u_int32_t dlfs_segtabsz;  /* 128: segment table size in blocks */
    740   1.49  perseant 	u_int32_t dlfs_segmask;	  /* 132: calculate offset within a segment */
    741   1.49  perseant 	u_int32_t dlfs_segshift;  /* 136: fast mult/div for segments */
    742   1.49  perseant 	u_int32_t dlfs_bshift;	  /* 140: calc block number from file offset */
    743   1.49  perseant 	u_int32_t dlfs_ffshift;	  /* 144: fast mult/div for frag from file */
    744   1.49  perseant 	u_int32_t dlfs_fbshift;	  /* 148: fast mult/div for frag from block */
    745   1.49  perseant 	u_int64_t dlfs_bmask;	  /* 152: calc block offset from file offset */
    746   1.49  perseant 	u_int64_t dlfs_ffmask;	  /* 160: calc frag offset from file offset */
    747   1.49  perseant 	u_int64_t dlfs_fbmask;	  /* 168: calc frag offset from block offset */
    748   1.49  perseant 	u_int32_t dlfs_blktodb;	  /* 176: blktodb and dbtoblk shift constant */
    749   1.49  perseant 	u_int32_t dlfs_sushift;	  /* 180: fast mult/div for segusage table */
    750   1.49  perseant 
    751   1.49  perseant 	int32_t	  dlfs_maxsymlinklen; /* 184: max length of an internal symlink */
    752  1.171  dholland 				  /* 188: superblock disk offsets */
    753  1.171  dholland 	int32_t	  dlfs_sboffs[LFS_MAXNUMSB];
    754    1.3       cgd 
    755   1.49  perseant 	u_int32_t dlfs_nclean;	  /* 228: Number of clean segments */
    756   1.11  perseant 	u_char	  dlfs_fsmnt[MNAMELEN];	 /* 232: name mounted on */
    757   1.49  perseant 	u_int16_t dlfs_pflags;	  /* 322: file system persistent flags */
    758   1.49  perseant 	int32_t	  dlfs_dmeta;	  /* 324: total number of dirty summaries */
    759  1.105  perseant 	u_int32_t dlfs_minfreeseg; /* 328: segments not counted in bfree */
    760   1.49  perseant 	u_int32_t dlfs_sumsize;	  /* 332: size of summary blocks */
    761   1.49  perseant 	u_int64_t dlfs_serial;	  /* 336: serial number */
    762   1.49  perseant 	u_int32_t dlfs_ibsize;	  /* 344: size of inode blocks */
    763  1.165  dholland 	int32_t	  dlfs_s0addr;	  /* 348: start of segment 0 */
    764   1.49  perseant 	u_int64_t dlfs_tstamp;	  /* 352: time stamp */
    765   1.37  perseant 	u_int32_t dlfs_inodefmt;  /* 360: inode format version */
    766   1.37  perseant 	u_int32_t dlfs_interleave; /* 364: segment interleave */
    767   1.49  perseant 	u_int32_t dlfs_ident;	  /* 368: per-fs identifier */
    768  1.156  dholland 	u_int32_t dlfs_fsbtodb;	  /* 372: fsbtodb and dbtodsb shift constant */
    769  1.105  perseant 	u_int32_t dlfs_resvseg;   /* 376: segments reserved for the cleaner */
    770  1.105  perseant 	int8_t	  dlfs_pad[128];  /* 380: round to 512 bytes */
    771    1.5   mycroft /* Checksum -- last valid disk field. */
    772   1.49  perseant 	u_int32_t dlfs_cksum;	  /* 508: checksum for superblock checking */
    773   1.10        pk };
    774    1.1   mycroft 
    775  1.171  dholland struct dlfs64 {
    776  1.171  dholland 	u_int32_t dlfs_magic;	  /* 0: magic number */
    777  1.171  dholland 	u_int32_t dlfs_version;	  /* 4: version number (2) */
    778  1.171  dholland 
    779  1.171  dholland 	u_int64_t dlfs_size;	  /* 8: number of frags in fs (v2) */
    780  1.171  dholland 	u_int64_t dlfs_dsize;	  /* 16: number of disk blocks in fs */
    781  1.171  dholland 	u_int32_t dlfs_ssize;	  /* 24: number of bytes per segment (v2) */
    782  1.171  dholland 	u_int32_t dlfs_bsize;	  /* 28: file system block size */
    783  1.171  dholland 	u_int32_t dlfs_fsize;	  /* 32: size of frag blocks in fs */
    784  1.171  dholland 	u_int32_t dlfs_frag;	  /* 36: number of frags in a block in fs */
    785  1.171  dholland 
    786  1.171  dholland /* Checkpoint region. */
    787  1.171  dholland 	u_int32_t dlfs_freehd;	  /* 40: start of the free inode list */
    788  1.171  dholland 	u_int32_t dlfs_nfiles;	  /* 44: number of allocated inodes */
    789  1.171  dholland 	int64_t   dlfs_bfree;	  /* 48: number of free frags */
    790  1.171  dholland 	int64_t	  dlfs_avail;	  /* 56: blocks available for writing */
    791  1.171  dholland 	int64_t	  dlfs_idaddr;	  /* 64: inode file disk address */
    792  1.171  dholland 	int32_t	  dlfs_uinodes;	  /* 72: inodes in cache not yet on disk */
    793  1.171  dholland 	u_int32_t dlfs_ifile;	  /* 76: inode file inode number */
    794  1.171  dholland 	int64_t	  dlfs_lastseg;	  /* 80: address of last segment written */
    795  1.171  dholland 	int64_t	  dlfs_nextseg;	  /* 88: address of next segment to write */
    796  1.171  dholland 	int64_t	  dlfs_curseg;	  /* 96: current segment being written */
    797  1.171  dholland 	int64_t	  dlfs_offset;	  /* 104: offset in curseg for next partial */
    798  1.171  dholland 	int64_t	  dlfs_lastpseg;  /* 112: address of last partial written */
    799  1.171  dholland 	u_int32_t dlfs_inopf;	  /* 120: inodes per frag */
    800  1.171  dholland 
    801  1.171  dholland /* These are configuration parameters. */
    802  1.171  dholland 	u_int32_t dlfs_minfree;	  /* 124: minimum percentage of free blocks */
    803  1.171  dholland 
    804  1.171  dholland /* These fields can be computed from the others. */
    805  1.171  dholland 	u_int64_t dlfs_maxfilesize; /* 128: maximum representable file size */
    806  1.171  dholland 	u_int32_t dlfs_fsbpseg;	  /* 136: frags (fsb) per segment */
    807  1.171  dholland 	u_int32_t dlfs_inopb;	  /* 140: inodes per block */
    808  1.171  dholland 	u_int32_t dlfs_ifpb;	  /* 144: IFILE entries per block */
    809  1.171  dholland 	u_int32_t dlfs_sepb;	  /* 148: SEGUSE entries per block */
    810  1.171  dholland 	u_int32_t dlfs_nindir;	  /* 152: indirect pointers per block */
    811  1.171  dholland 	u_int32_t dlfs_nseg;	  /* 156: number of segments */
    812  1.171  dholland 	u_int32_t dlfs_nspf;	  /* 160: number of sectors per fragment */
    813  1.171  dholland 	u_int32_t dlfs_cleansz;	  /* 164: cleaner info size in blocks */
    814  1.171  dholland 	u_int32_t dlfs_segtabsz;  /* 168: segment table size in blocks */
    815  1.171  dholland 	u_int32_t dlfs_bshift;	  /* 172: calc block number from file offset */
    816  1.171  dholland 	u_int32_t dlfs_ffshift;	  /* 176: fast mult/div for frag from file */
    817  1.171  dholland 	u_int32_t dlfs_fbshift;	  /* 180: fast mult/div for frag from block */
    818  1.171  dholland 	u_int64_t dlfs_bmask;	  /* 184: calc block offset from file offset */
    819  1.171  dholland 	u_int64_t dlfs_ffmask;	  /* 192: calc frag offset from file offset */
    820  1.171  dholland 	u_int64_t dlfs_fbmask;	  /* 200: calc frag offset from block offset */
    821  1.171  dholland 	u_int32_t dlfs_blktodb;	  /* 208: blktodb and dbtoblk shift constant */
    822  1.171  dholland 	u_int32_t dlfs_sushift;	  /* 212: fast mult/div for segusage table */
    823  1.171  dholland 
    824  1.171  dholland 				  /* 216: superblock disk offsets */
    825  1.171  dholland 	int64_t	   dlfs_sboffs[LFS_MAXNUMSB];
    826  1.171  dholland 
    827  1.171  dholland 	int32_t	  dlfs_maxsymlinklen; /* 296: max len of an internal symlink */
    828  1.171  dholland 	u_int32_t dlfs_nclean;	  /* 300: Number of clean segments */
    829  1.171  dholland 	u_char	  dlfs_fsmnt[MNAMELEN];	 /* 304: name mounted on */
    830  1.171  dholland 	u_int16_t dlfs_pflags;	  /* 394: file system persistent flags */
    831  1.171  dholland 	int32_t	  dlfs_dmeta;	  /* 396: total number of dirty summaries */
    832  1.171  dholland 	u_int32_t dlfs_minfreeseg; /* 400: segments not counted in bfree */
    833  1.171  dholland 	u_int32_t dlfs_sumsize;	  /* 404: size of summary blocks */
    834  1.171  dholland 	u_int32_t dlfs_ibsize;	  /* 408: size of inode blocks */
    835  1.171  dholland 	u_int32_t dlfs_inodefmt;  /* 412: inode format version */
    836  1.171  dholland 	u_int64_t dlfs_serial;	  /* 416: serial number */
    837  1.171  dholland 	int64_t	  dlfs_s0addr;	  /* 424: start of segment 0 */
    838  1.171  dholland 	u_int64_t dlfs_tstamp;	  /* 432: time stamp */
    839  1.171  dholland 	u_int32_t dlfs_interleave; /* 440: segment interleave */
    840  1.171  dholland 	u_int32_t dlfs_ident;	  /* 444: per-fs identifier */
    841  1.171  dholland 	u_int32_t dlfs_fsbtodb;	  /* 448: fsbtodb and dbtodsb shift constant */
    842  1.171  dholland 	u_int32_t dlfs_resvseg;   /* 452: segments reserved for the cleaner */
    843  1.171  dholland 	int8_t	  dlfs_pad[52];   /* 456: round to 512 bytes */
    844  1.171  dholland /* Checksum -- last valid disk field. */
    845  1.171  dholland 	u_int32_t dlfs_cksum;	  /* 508: checksum for superblock checking */
    846  1.171  dholland };
    847  1.171  dholland 
    848  1.101  perseant /* Type used for the inode bitmap */
    849  1.101  perseant typedef u_int32_t lfs_bm_t;
    850  1.101  perseant 
    851   1.61  perseant /*
    852  1.104  perseant  * Linked list of segments whose byte count needs updating following a
    853  1.104  perseant  * file truncation.
    854  1.104  perseant  */
    855  1.104  perseant struct segdelta {
    856  1.104  perseant 	long segnum;
    857  1.104  perseant 	size_t num;
    858  1.104  perseant 	LIST_ENTRY(segdelta) list;
    859  1.104  perseant };
    860  1.104  perseant 
    861  1.104  perseant /*
    862   1.61  perseant  * In-memory super block.
    863   1.61  perseant  */
    864   1.10        pk struct lfs {
    865  1.171  dholland 	union {				/* on-disk parameters */
    866  1.171  dholland 		struct dlfs u_32;
    867  1.171  dholland 		struct dlfs64 u_64;
    868  1.171  dholland 	} lfs_dlfs_u;
    869   1.26  perseant 
    870    1.1   mycroft /* These fields are set at mount time and are meaningless on disk. */
    871  1.171  dholland 	unsigned lfs_is64 : 1;		/* are we lfs64 or lfs32? */
    872  1.171  dholland 
    873    1.5   mycroft 	struct segment *lfs_sp;		/* current segment being written */
    874    1.5   mycroft 	struct vnode *lfs_ivnode;	/* vnode for the ifile */
    875    1.8        is 	u_int32_t  lfs_seglock;		/* single-thread the segment writer */
    876    1.5   mycroft 	pid_t	  lfs_lockpid;		/* pid of lock holder */
    877   1.98  perseant 	lwpid_t	  lfs_locklwp;		/* lwp of lock holder */
    878    1.8        is 	u_int32_t lfs_iocount;		/* number of ios pending */
    879    1.8        is 	u_int32_t lfs_writer;		/* don't allow any dirops to start */
    880    1.8        is 	u_int32_t lfs_dirops;		/* count of active directory ops */
    881  1.105  perseant 	u_int32_t lfs_dirvcount;	/* count of VDIROP nodes in this fs */
    882    1.8        is 	u_int32_t lfs_doifile;		/* Write ifile blocks on next write */
    883    1.8        is 	u_int32_t lfs_nactive;		/* Number of segments since last ckp */
    884    1.5   mycroft 	int8_t	  lfs_fmod;		/* super block modified flag */
    885    1.5   mycroft 	int8_t	  lfs_ronly;		/* mounted read-only flag */
    886   1.39  perseant #define LFS_NOTYET  0x01
    887   1.39  perseant #define LFS_IFDIRTY 0x02
    888   1.39  perseant #define LFS_WARNED  0x04
    889   1.64  perseant #define LFS_UNDIROP 0x08
    890    1.5   mycroft 	int8_t	  lfs_flags;		/* currently unused flag */
    891   1.49  perseant 	u_int16_t lfs_activesb;		/* toggle between superblocks */
    892   1.61  perseant 	daddr_t	  lfs_sbactive;		/* disk address of current sb write */
    893   1.49  perseant 	struct vnode *lfs_flushvp;	/* vnode being flushed */
    894  1.102  perseant 	int lfs_flushvp_fakevref;	/* fake vref count for flushvp */
    895   1.49  perseant 	struct vnode *lfs_unlockvp;	/* being inactivated in lfs_segunlock */
    896   1.15  perseant 	u_int32_t lfs_diropwait;	/* # procs waiting on dirop flush */
    897   1.37  perseant 	size_t lfs_devbsize;		/* Device block size */
    898   1.37  perseant 	size_t lfs_devbshift;		/* Device block shift */
    899  1.118        ad 	krwlock_t lfs_fraglock;
    900  1.123        ad 	krwlock_t lfs_iflock;		/* Ifile lock */
    901  1.123        ad 	kcondvar_t lfs_stopcv;		/* Wrap lock */
    902  1.123        ad 	struct lwp *lfs_stoplwp;
    903   1.25  perseant 	pid_t lfs_rfpid;		/* Process ID of roll-forward agent */
    904   1.49  perseant 	int	  lfs_nadirop;		/* number of active dirop nodes */
    905   1.49  perseant 	long	  lfs_ravail;		/* blocks pre-reserved for writing */
    906   1.75  perseant 	long	  lfs_favail;		/* blocks pre-reserved for writing */
    907  1.153  dholland 	struct lfs_res_blk *lfs_resblk;	/* Reserved memory for pageout */
    908   1.46  perseant 	TAILQ_HEAD(, inode) lfs_dchainhd; /* dirop vnodes */
    909   1.46  perseant 	TAILQ_HEAD(, inode) lfs_pchainhd; /* paging vnodes */
    910   1.46  perseant #define LFS_RESHASH_WIDTH 17
    911   1.76     perry 	LIST_HEAD(, lfs_res_blk) lfs_reshash[LFS_RESHASH_WIDTH];
    912   1.49  perseant 	int	  lfs_pdflush;		 /* pagedaemon wants us to flush */
    913   1.46  perseant 	u_int32_t **lfs_suflags;	/* Segment use flags */
    914   1.47     soren #ifdef _KERNEL
    915   1.46  perseant 	struct pool lfs_clpool;		/* Pool for struct lfs_cluster */
    916   1.46  perseant 	struct pool lfs_bpppool;	/* Pool for bpp */
    917   1.46  perseant 	struct pool lfs_segpool;	/* Pool for struct segment */
    918   1.61  perseant #endif /* _KERNEL */
    919   1.55  perseant #define LFS_MAX_CLEANIND 64
    920  1.170  dholland 	daddr_t  lfs_cleanint[LFS_MAX_CLEANIND]; /* Active cleaning intervals */
    921  1.123        ad 	int 	 lfs_cleanind;		/* Index into intervals */
    922   1.61  perseant 	int lfs_sleepers;		/* # procs sleeping this fs */
    923   1.75  perseant 	int lfs_pages;			/* dirty pages blaming this fs */
    924  1.101  perseant 	lfs_bm_t *lfs_ino_bitmap;	/* Inuse inodes bitmap */
    925  1.103  perseant 	int lfs_nowrap;			/* Suspend log wrap */
    926  1.114  perseant 	int lfs_wrappass;		/* Allow first log wrap requester to pass */
    927  1.114  perseant 	int lfs_wrapstatus;		/* Wrap status */
    928  1.135  perseant 	int lfs_reclino;		/* Inode being reclaimed */
    929  1.169  dholland 	daddr_t lfs_startseg;           /* Segment we started writing at */
    930  1.104  perseant 	LIST_HEAD(, segdelta) lfs_segdhd;	/* List of pending trunc accounting events */
    931  1.159  dholland 
    932  1.159  dholland #ifdef _KERNEL
    933  1.159  dholland 	/* ULFS-level information */
    934  1.159  dholland 	u_int32_t um_flags;			/* ULFS flags (below) */
    935  1.159  dholland 	u_long	um_nindir;			/* indirect ptrs per block */
    936  1.159  dholland 	u_long	um_lognindir;			/* log2 of um_nindir */
    937  1.159  dholland 	u_long	um_bptrtodb;			/* indir ptr to disk block */
    938  1.159  dholland 	u_long	um_seqinc;			/* inc between seq blocks */
    939  1.159  dholland 	int um_maxsymlinklen;
    940  1.159  dholland 	int um_dirblksiz;
    941  1.159  dholland 	u_int64_t um_maxfilesize;
    942  1.160  dholland 
    943  1.160  dholland 	/* Stuff used by quota2 code, not currently operable */
    944  1.160  dholland 	unsigned lfs_use_quota2 : 1;
    945  1.160  dholland 	uint32_t lfs_quota_magic;
    946  1.160  dholland 	uint8_t lfs_quota_flags;
    947  1.160  dholland 	uint64_t lfs_quotaino[2];
    948  1.164  dholland 
    949  1.164  dholland 	/* Sleep address replacing &lfs_avail inside the on-disk superblock */
    950  1.164  dholland 	/* XXX: should be replaced with a condvar */
    951  1.164  dholland 	int lfs_availsleep;
    952  1.164  dholland 	/* This one replaces &lfs_nextseg... all ditto */
    953  1.164  dholland 	int lfs_nextsegsleep;
    954  1.159  dholland #endif
    955    1.1   mycroft };
    956    1.1   mycroft 
    957  1.164  dholland /*
    958    1.1   mycroft  * Structures used by lfs_bmapv and lfs_markv to communicate information
    959    1.1   mycroft  * about inodes and data blocks.
    960    1.1   mycroft  */
    961    1.1   mycroft typedef struct block_info {
    962  1.174  dholland 	u_int64_t bi_inode;		/* inode # */
    963  1.174  dholland 	int64_t	bi_lbn;			/* logical block w/in file */
    964  1.174  dholland 	int64_t	bi_daddr;		/* disk address of block */
    965  1.174  dholland 	u_int64_t bi_segcreate;		/* origin segment create time */
    966  1.174  dholland 	int	bi_version;		/* file version number */
    967  1.174  dholland 	int	bi_size;		/* size of the block (if fragment) */
    968  1.174  dholland 	void	*bi_bp;			/* data buffer */
    969  1.174  dholland } BLOCK_INFO;
    970  1.174  dholland 
    971  1.174  dholland /* Compatibility for 7.0 binaries */
    972  1.174  dholland typedef struct block_info_70 {
    973   1.91      yamt 	u_int32_t bi_inode;		/* inode # */
    974   1.91      yamt 	int32_t	bi_lbn;			/* logical block w/in file */
    975   1.91      yamt 	int32_t	bi_daddr;		/* disk address of block */
    976   1.91      yamt 	u_int64_t bi_segcreate;		/* origin segment create time */
    977    1.1   mycroft 	int	bi_version;		/* file version number */
    978    1.1   mycroft 	void	*bi_bp;			/* data buffer */
    979   1.49  perseant 	int	bi_size;		/* size of the block (if fragment) */
    980  1.174  dholland } BLOCK_INFO_70;
    981   1.37  perseant 
    982   1.37  perseant /* Compatibility for 1.5 binaries */
    983   1.37  perseant typedef struct block_info_15 {
    984   1.91      yamt 	u_int32_t bi_inode;		/* inode # */
    985   1.91      yamt 	int32_t	bi_lbn;			/* logical block w/in file */
    986   1.91      yamt 	int32_t	bi_daddr;		/* disk address of block */
    987   1.91      yamt 	u_int32_t bi_segcreate;		/* origin segment create time */
    988   1.37  perseant 	int	bi_version;		/* file version number */
    989   1.37  perseant 	void	*bi_bp;			/* data buffer */
    990   1.49  perseant 	int	bi_size;		/* size of the block (if fragment) */
    991   1.37  perseant } BLOCK_INFO_15;
    992    1.1   mycroft 
    993  1.178  dholland /*
    994  1.178  dholland  * 32/64-bit-clean pointer to block pointers. This points into
    995  1.178  dholland  * already-existing storage; it is mostly used to access the block
    996  1.178  dholland  * pointers following a FINFO.
    997  1.178  dholland  */
    998  1.178  dholland union lfs_blocks {
    999  1.178  dholland 	int64_t *b64;
   1000  1.178  dholland 	int32_t *b32;
   1001  1.178  dholland };
   1002  1.178  dholland 
   1003    1.1   mycroft /* In-memory description of a segment about to be written. */
   1004    1.1   mycroft struct segment {
   1005    1.5   mycroft 	struct lfs	 *fs;		/* file system pointer */
   1006    1.1   mycroft 	struct buf	**bpp;		/* pointer to buffer array */
   1007    1.1   mycroft 	struct buf	**cbpp;		/* pointer to next available bp */
   1008    1.1   mycroft 	struct buf	**start_bpp;	/* pointer to first bp in this set */
   1009    1.5   mycroft 	struct buf	 *ibp;		/* buffer pointer to inode page */
   1010  1.138  dholland 	struct ulfs1_dinode    *idp;          /* pointer to ifile dinode */
   1011  1.178  dholland 	FINFO *fip;			/* current fileinfo pointer */
   1012    1.5   mycroft 	struct vnode	 *vp;		/* vnode being gathered */
   1013    1.3       cgd 	void	 *segsum;		/* segment summary info */
   1014    1.3       cgd 	u_int32_t ninodes;		/* number of inodes in this segment */
   1015   1.50  perseant 	int32_t seg_bytes_left;		/* bytes left in segment */
   1016   1.50  perseant 	int32_t sum_bytes_left;		/* bytes left in summary block */
   1017    1.3       cgd 	u_int32_t seg_number;		/* number of this segment */
   1018  1.178  dholland 	union lfs_blocks start_lbp;	/* beginning lbn for this set */
   1019    1.5   mycroft 
   1020  1.135  perseant #define SEGM_CKP	0x0001		/* doing a checkpoint */
   1021  1.135  perseant #define SEGM_CLEAN	0x0002		/* cleaner call; don't sort */
   1022  1.135  perseant #define SEGM_SYNC	0x0004		/* wait for segment */
   1023  1.135  perseant #define SEGM_PROT	0x0008		/* don't inactivate at segunlock */
   1024  1.135  perseant #define SEGM_PAGEDAEMON	0x0010		/* pagedaemon called us */
   1025  1.135  perseant #define SEGM_WRITERD	0x0020		/* LFS writed called us */
   1026  1.135  perseant #define SEGM_FORCE_CKP	0x0040		/* Force checkpoint right away */
   1027  1.135  perseant #define SEGM_RECLAIM	0x0080		/* Writing to reclaim vnode */
   1028  1.135  perseant #define SEGM_SINGLE	0x0100		/* Opportunistic writevnodes */
   1029    1.5   mycroft 	u_int16_t seg_flags;		/* run-time flags for this segment */
   1030   1.40  perseant 	u_int32_t seg_iocount;		/* number of ios pending */
   1031   1.49  perseant 	int	  ndupino;		/* number of duplicate inodes */
   1032   1.39  perseant };
   1033   1.39  perseant 
   1034    1.1   mycroft /* Statistics Counters */
   1035   1.77  perseant struct lfs_stats {	/* Must match sysctl list in lfs_vfsops.h ! */
   1036    1.5   mycroft 	u_int	segsused;
   1037    1.5   mycroft 	u_int	psegwrites;
   1038    1.5   mycroft 	u_int	psyncwrites;
   1039    1.5   mycroft 	u_int	pcleanwrites;
   1040    1.5   mycroft 	u_int	blocktot;
   1041    1.5   mycroft 	u_int	cleanblocks;
   1042    1.5   mycroft 	u_int	ncheckpoints;
   1043    1.5   mycroft 	u_int	nwrites;
   1044    1.5   mycroft 	u_int	nsync_writes;
   1045    1.5   mycroft 	u_int	wait_exceeded;
   1046    1.5   mycroft 	u_int	write_exceeded;
   1047    1.5   mycroft 	u_int	flush_invoked;
   1048   1.11  perseant 	u_int	vflush_invoked;
   1049   1.77  perseant 	u_int	clean_inlocked;
   1050   1.77  perseant 	u_int	clean_vnlocked;
   1051   1.87  perseant 	u_int   segs_reclaimed;
   1052    1.1   mycroft };
   1053   1.51  perseant 
   1054   1.52  perseant /* Fcntls to take the place of the lfs syscalls */
   1055   1.52  perseant struct lfs_fcntl_markv {
   1056   1.51  perseant 	BLOCK_INFO *blkiov;	/* blocks to relocate */
   1057  1.173  dholland 	int blkcnt;		/* number of blocks (limited to 65536) */
   1058   1.51  perseant };
   1059   1.51  perseant 
   1060  1.129  christos #define LFCNSEGWAITALL	_FCNR_FSPRIV('L', 14, struct timeval)
   1061  1.129  christos #define LFCNSEGWAIT	_FCNR_FSPRIV('L', 15, struct timeval)
   1062  1.174  dholland #define LFCNBMAPV	_FCNRW_FSPRIV('L', 16, struct lfs_fcntl_markv)
   1063  1.174  dholland #define LFCNMARKV	_FCNRW_FSPRIV('L', 17, struct lfs_fcntl_markv)
   1064   1.54  perseant #define LFCNRECLAIM	 _FCNO_FSPRIV('L', 4)
   1065  1.109    martin 
   1066  1.112    martin struct lfs_fhandle {
   1067  1.113    martin 	char space[28];	/* FHANDLE_SIZE_COMPAT (but used from userland too) */
   1068  1.110    martin };
   1069   1.86  perseant #define LFCNREWIND       _FCNR_FSPRIV('L', 6, int)
   1070   1.86  perseant #define LFCNINVAL        _FCNR_FSPRIV('L', 7, int)
   1071   1.86  perseant #define LFCNRESIZE       _FCNR_FSPRIV('L', 8, int)
   1072  1.108  perseant #define LFCNWRAPSTOP	 _FCNR_FSPRIV('L', 9, int)
   1073  1.108  perseant #define LFCNWRAPGO	 _FCNR_FSPRIV('L', 10, int)
   1074  1.112    martin #define LFCNIFILEFH	 _FCNW_FSPRIV('L', 11, struct lfs_fhandle)
   1075  1.114  perseant #define LFCNWRAPPASS	 _FCNR_FSPRIV('L', 12, int)
   1076  1.114  perseant # define LFS_WRAP_GOING   0x0
   1077  1.114  perseant # define LFS_WRAP_WAITING 0x1
   1078  1.114  perseant #define LFCNWRAPSTATUS	 _FCNW_FSPRIV('L', 13, int)
   1079  1.130     pooka 
   1080   1.78  perseant /* Debug segment lock */
   1081   1.78  perseant #ifdef notyet
   1082   1.78  perseant # define ASSERT_SEGLOCK(fs) KASSERT(LFS_SEGLOCK_HELD(fs))
   1083   1.78  perseant # define ASSERT_NO_SEGLOCK(fs) KASSERT(!LFS_SEGLOCK_HELD(fs))
   1084   1.78  perseant # define ASSERT_DUNNO_SEGLOCK(fs)
   1085   1.78  perseant # define ASSERT_MAYBE_SEGLOCK(fs)
   1086   1.78  perseant #else /* !notyet */
   1087   1.78  perseant # define ASSERT_DUNNO_SEGLOCK(fs) \
   1088   1.78  perseant 	DLOG((DLOG_SEG, "lfs func %s seglock wrong (%d)\n", __func__, \
   1089   1.78  perseant 		LFS_SEGLOCK_HELD(fs)))
   1090   1.78  perseant # define ASSERT_SEGLOCK(fs) do {					\
   1091   1.78  perseant 	if (!LFS_SEGLOCK_HELD(fs)) {					\
   1092   1.78  perseant 		DLOG((DLOG_SEG, "lfs func %s seglock wrong (0)\n", __func__)); \
   1093   1.78  perseant 	}								\
   1094   1.78  perseant } while(0)
   1095   1.78  perseant # define ASSERT_NO_SEGLOCK(fs) do {					\
   1096   1.78  perseant 	if (LFS_SEGLOCK_HELD(fs)) {					\
   1097   1.78  perseant 		DLOG((DLOG_SEG, "lfs func %s seglock wrong (1)\n", __func__)); \
   1098   1.78  perseant 	}								\
   1099   1.78  perseant } while(0)
   1100   1.78  perseant # define ASSERT_MAYBE_SEGLOCK(x)
   1101   1.78  perseant #endif /* !notyet */
   1102   1.78  perseant 
   1103  1.145  dholland /*
   1104  1.145  dholland  * Arguments to mount LFS filesystems
   1105  1.145  dholland  */
   1106  1.145  dholland struct ulfs_args {
   1107  1.145  dholland 	char	*fspec;			/* block special device to mount */
   1108  1.145  dholland };
   1109  1.145  dholland 
   1110   1.94  christos __BEGIN_DECLS
   1111   1.94  christos void lfs_itimes(struct inode *, const struct timespec *,
   1112   1.94  christos     const struct timespec *, const struct timespec *);
   1113   1.94  christos __END_DECLS
   1114   1.94  christos 
   1115   1.42      matt #endif /* !_UFS_LFS_LFS_H_ */
   1116