1c85e6a35d
filesystem expands the inode to 256 bytes to make space for 64-bit block pointers. It also adds a file-creation time field, an ability to use jumbo blocks per inode to allow extent like pointer density, and space for extended attributes (up to twice the filesystem block size worth of attributes, e.g., on a 16K filesystem, there is space for 32K of attributes). UFS2 fully supports and runs existing UFS1 filesystems. New filesystems built using newfs can be built in either UFS1 or UFS2 format using the -O option. In this commit UFS1 is the default format, so if you want to build UFS2 format filesystems, you must specify -O 2. This default will be changed to UFS2 when UFS2 proves itself to be stable. In this commit the boot code for reading UFS2 filesystems is not compiled (see /sys/boot/common/ufsread.c) as there is insufficient space in the boot block. Once the size of the boot block is increased, this code can be defined. Things to note: the definition of SBSIZE has changed to SBLOCKSIZE. The header file <ufs/ufs/dinode.h> must be included before <ufs/ffs/fs.h> so as to get the definitions of ufs2_daddr_t and ufs_lbn_t. Still TODO: Verify that the first level bootstraps work for all the architectures. Convert the utility ffsinfo to understand UFS2 and test growfs. Add support for the extended attribute storage. Update soft updates to ensure integrity of extended attribute storage. Switch the current extended attribute interfaces to use the extended attribute storage. Add the extent like functionality (framework is there, but is currently never used). Sponsored by: DARPA & NAI Labs. Reviewed by: Poul-Henning Kamp <phk@freebsd.org>
295 lines
5.9 KiB
C
295 lines
5.9 KiB
C
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/*
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* Copyright 1998 Marshall Kirk McKusick. All Rights Reserved.
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*
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* The soft updates code is derived from the appendix of a University
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* of Michigan technical report (Gregory R. Ganger and Yale N. Patt,
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* "Soft Updates: A Solution to the Metadata Update Problem in File
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* Systems", CSE-TR-254-95, August 1995).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. None of the names of McKusick, Ganger, or the University of Michigan
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY MARSHALL KIRK MCKUSICK ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL MARSHALL KIRK MCKUSICK BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)ffs_softdep_stub.c 9.1 (McKusick) 7/10/97
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* $FreeBSD$
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*/
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/*
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* Use this file as ffs_softdep.c if you do not wish the real ffs_softdep.c
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* to be included in your system. (e.g for legal reasons )
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* The real files are in /usr/src/contrib/sys/softupdates.
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* You must copy them here before you can use soft updates.
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* Read the README for legal and technical information.
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*/
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#include "opt_ffs.h"
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#if (SOFTUPDATES == 0 ) /* SOFTUPDATES not configured in, use these stubs. */
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/vnode.h>
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#include <sys/mount.h>
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#include <ufs/ufs/quota.h>
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#include <ufs/ufs/inode.h>
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#include <ufs/ffs/ffs_extern.h>
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#include <ufs/ufs/ufs_extern.h>
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int
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softdep_flushfiles(oldmnt, flags, td)
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struct mount *oldmnt;
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int flags;
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struct thread *td;
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{
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panic("softdep_flushfiles called");
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}
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int
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softdep_mount(devvp, mp, fs, cred)
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struct vnode *devvp;
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struct mount *mp;
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struct fs *fs;
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struct ucred *cred;
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{
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return (0);
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}
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void
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softdep_initialize()
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{
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return;
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}
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void
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softdep_setup_inomapdep(bp, ip, newinum)
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struct buf *bp;
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struct inode *ip;
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ino_t newinum;
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{
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panic("softdep_setup_inomapdep called");
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}
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void
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softdep_setup_blkmapdep(bp, fs, newblkno)
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struct buf *bp;
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struct fs *fs;
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ufs2_daddr_t newblkno;
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{
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panic("softdep_setup_blkmapdep called");
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}
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void
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softdep_setup_allocdirect(ip, lbn, newblkno, oldblkno, newsize, oldsize, bp)
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struct inode *ip;
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ufs_lbn_t lbn;
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ufs2_daddr_t newblkno;
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ufs2_daddr_t oldblkno;
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long newsize;
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long oldsize;
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struct buf *bp;
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{
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panic("softdep_setup_allocdirect called");
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}
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void
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softdep_setup_allocindir_page(ip, lbn, bp, ptrno, newblkno, oldblkno, nbp)
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struct inode *ip;
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ufs_lbn_t lbn;
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struct buf *bp;
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int ptrno;
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ufs2_daddr_t newblkno;
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ufs2_daddr_t oldblkno;
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struct buf *nbp;
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{
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panic("softdep_setup_allocindir_page called");
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}
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void
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softdep_setup_allocindir_meta(nbp, ip, bp, ptrno, newblkno)
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struct buf *nbp;
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struct inode *ip;
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struct buf *bp;
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int ptrno;
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ufs2_daddr_t newblkno;
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{
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panic("softdep_setup_allocindir_meta called");
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}
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void
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softdep_setup_freeblocks(ip, length)
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struct inode *ip;
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off_t length;
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{
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panic("softdep_setup_freeblocks called");
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}
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void
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softdep_freefile(pvp, ino, mode)
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struct vnode *pvp;
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ino_t ino;
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int mode;
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{
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panic("softdep_freefile called");
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}
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int
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softdep_setup_directory_add(bp, dp, diroffset, newinum, newdirbp, isnewblk)
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struct buf *bp;
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struct inode *dp;
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off_t diroffset;
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long newinum;
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struct buf *newdirbp;
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int isnewblk;
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{
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panic("softdep_setup_directory_add called");
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}
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void
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softdep_change_directoryentry_offset(dp, base, oldloc, newloc, entrysize)
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struct inode *dp;
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caddr_t base;
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caddr_t oldloc;
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caddr_t newloc;
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int entrysize;
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{
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panic("softdep_change_directoryentry_offset called");
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}
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void
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softdep_setup_remove(bp, dp, ip, isrmdir)
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struct buf *bp;
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struct inode *dp;
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struct inode *ip;
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int isrmdir;
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{
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panic("softdep_setup_remove called");
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}
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void
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softdep_setup_directory_change(bp, dp, ip, newinum, isrmdir)
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struct buf *bp;
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struct inode *dp;
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struct inode *ip;
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long newinum;
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int isrmdir;
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{
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panic("softdep_setup_directory_change called");
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}
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void
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softdep_change_linkcnt(ip)
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struct inode *ip;
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{
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panic("softdep_change_linkcnt called");
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}
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void
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softdep_load_inodeblock(ip)
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struct inode *ip;
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{
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panic("softdep_load_inodeblock called");
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}
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void
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softdep_update_inodeblock(ip, bp, waitfor)
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struct inode *ip;
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struct buf *bp;
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int waitfor;
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{
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panic("softdep_update_inodeblock called");
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}
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void
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softdep_fsync_mountdev(vp)
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struct vnode *vp;
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{
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return;
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}
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int
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softdep_flushworklist(oldmnt, countp, td)
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struct mount *oldmnt;
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int *countp;
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struct thread *td;
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{
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*countp = 0;
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return (0);
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}
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int
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softdep_sync_metadata(ap)
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struct vop_fsync_args /* {
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struct vnode *a_vp;
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struct ucred *a_cred;
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int a_waitfor;
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struct thread *a_td;
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} */ *ap;
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{
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return (0);
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}
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int
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softdep_slowdown(vp)
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struct vnode *vp;
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{
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panic("softdep_slowdown called");
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}
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void
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softdep_releasefile(ip)
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struct inode *ip; /* inode with the zero effective link count */
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{
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panic("softdep_releasefile called");
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}
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int
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softdep_request_cleanup(fs, vp)
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struct fs *fs;
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struct vnode *vp;
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{
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return (0);
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}
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#endif /* SOFTUPDATES not configured in */
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