9ccb939ef0
that are committed to being freed and reflect these blocks in the counts returned by statfs (and thus also by the `df' command). This change allows programs such as those that do news expiration to know when to stop if they are trying to create a certain percentage of free space. Note that this change does not solve the much harder problem of making this to-be-freed space available to applications that want it (thus on a nearly full filesystem, you may still encounter out-of-space conditions even though the free space will show up eventually). Hopefully this harder problem will be the subject of a future enhancement.
285 lines
5.8 KiB
C
285 lines
5.8 KiB
C
|
|
/*
|
|
* Copyright 1998 Marshall Kirk McKusick. All Rights Reserved.
|
|
*
|
|
* The soft updates code is derived from the appendix of a University
|
|
* of Michigan technical report (Gregory R. Ganger and Yale N. Patt,
|
|
* "Soft Updates: A Solution to the Metadata Update Problem in File
|
|
* Systems", CSE-TR-254-95, August 1995).
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. None of the names of McKusick, Ganger, or the University of Michigan
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY MARSHALL KIRK MCKUSICK ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL MARSHALL KIRK MCKUSICK BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from: @(#)ffs_softdep_stub.c 9.1 (McKusick) 7/10/97
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* Use this file as ffs_softdep.c if you do not wish the real ffs_softdep.c
|
|
* to be included in your system. (e.g for legal reasons )
|
|
* The real files are in /usr/src/contrib/sys/softupdates.
|
|
* You must copy them here before you can use soft updates.
|
|
* Read the README for legal and technical information.
|
|
*/
|
|
|
|
#include "opt_ffs.h"
|
|
#if (SOFTUPDATES == 0 ) /* SOFTUPDATES not configured in, use these stubs. */
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/mount.h>
|
|
#include <ufs/ufs/quota.h>
|
|
#include <ufs/ufs/inode.h>
|
|
#include <ufs/ffs/ffs_extern.h>
|
|
#include <ufs/ufs/ufs_extern.h>
|
|
|
|
int
|
|
softdep_flushfiles(oldmnt, flags, p)
|
|
struct mount *oldmnt;
|
|
int flags;
|
|
struct proc *p;
|
|
{
|
|
|
|
panic("softdep_flushfiles called");
|
|
}
|
|
|
|
int
|
|
softdep_mount(devvp, mp, fs, cred)
|
|
struct vnode *devvp;
|
|
struct mount *mp;
|
|
struct fs *fs;
|
|
struct ucred *cred;
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
softdep_initialize()
|
|
{
|
|
|
|
return;
|
|
}
|
|
|
|
void
|
|
softdep_setup_inomapdep(bp, ip, newinum)
|
|
struct buf *bp;
|
|
struct inode *ip;
|
|
ino_t newinum;
|
|
{
|
|
|
|
panic("softdep_setup_inomapdep called");
|
|
}
|
|
|
|
void
|
|
softdep_setup_blkmapdep(bp, fs, newblkno)
|
|
struct buf *bp;
|
|
struct fs *fs;
|
|
ufs_daddr_t newblkno;
|
|
{
|
|
|
|
panic("softdep_setup_blkmapdep called");
|
|
}
|
|
|
|
void
|
|
softdep_setup_allocdirect(ip, lbn, newblkno, oldblkno, newsize, oldsize, bp)
|
|
struct inode *ip;
|
|
ufs_lbn_t lbn;
|
|
ufs_daddr_t newblkno;
|
|
ufs_daddr_t oldblkno;
|
|
long newsize;
|
|
long oldsize;
|
|
struct buf *bp;
|
|
{
|
|
|
|
panic("softdep_setup_allocdirect called");
|
|
}
|
|
|
|
void
|
|
softdep_setup_allocindir_page(ip, lbn, bp, ptrno, newblkno, oldblkno, nbp)
|
|
struct inode *ip;
|
|
ufs_lbn_t lbn;
|
|
struct buf *bp;
|
|
int ptrno;
|
|
ufs_daddr_t newblkno;
|
|
ufs_daddr_t oldblkno;
|
|
struct buf *nbp;
|
|
{
|
|
|
|
panic("softdep_setup_allocindir_page called");
|
|
}
|
|
|
|
void
|
|
softdep_setup_allocindir_meta(nbp, ip, bp, ptrno, newblkno)
|
|
struct buf *nbp;
|
|
struct inode *ip;
|
|
struct buf *bp;
|
|
int ptrno;
|
|
ufs_daddr_t newblkno;
|
|
{
|
|
|
|
panic("softdep_setup_allocindir_meta called");
|
|
}
|
|
|
|
void
|
|
softdep_setup_freeblocks(ip, length)
|
|
struct inode *ip;
|
|
off_t length;
|
|
{
|
|
|
|
panic("softdep_setup_freeblocks called");
|
|
}
|
|
|
|
void
|
|
softdep_freefile(pvp, ino, mode)
|
|
struct vnode *pvp;
|
|
ino_t ino;
|
|
int mode;
|
|
{
|
|
|
|
panic("softdep_freefile called");
|
|
}
|
|
|
|
void
|
|
softdep_setup_directory_add(bp, dp, diroffset, newinum, newdirbp)
|
|
struct buf *bp;
|
|
struct inode *dp;
|
|
off_t diroffset;
|
|
long newinum;
|
|
struct buf *newdirbp;
|
|
{
|
|
|
|
panic("softdep_setup_directory_add called");
|
|
}
|
|
|
|
void
|
|
softdep_change_directoryentry_offset(dp, base, oldloc, newloc, entrysize)
|
|
struct inode *dp;
|
|
caddr_t base;
|
|
caddr_t oldloc;
|
|
caddr_t newloc;
|
|
int entrysize;
|
|
{
|
|
|
|
panic("softdep_change_directoryentry_offset called");
|
|
}
|
|
|
|
void
|
|
softdep_setup_remove(bp, dp, ip, isrmdir)
|
|
struct buf *bp;
|
|
struct inode *dp;
|
|
struct inode *ip;
|
|
int isrmdir;
|
|
{
|
|
|
|
panic("softdep_setup_remove called");
|
|
}
|
|
|
|
void
|
|
softdep_setup_directory_change(bp, dp, ip, newinum, isrmdir)
|
|
struct buf *bp;
|
|
struct inode *dp;
|
|
struct inode *ip;
|
|
long newinum;
|
|
int isrmdir;
|
|
{
|
|
|
|
panic("softdep_setup_directory_change called");
|
|
}
|
|
|
|
void
|
|
softdep_change_linkcnt(ip)
|
|
struct inode *ip;
|
|
{
|
|
|
|
panic("softdep_change_linkcnt called");
|
|
}
|
|
|
|
void
|
|
softdep_load_inodeblock(ip)
|
|
struct inode *ip;
|
|
{
|
|
|
|
panic("softdep_load_inodeblock called");
|
|
}
|
|
|
|
void
|
|
softdep_update_inodeblock(ip, bp, waitfor)
|
|
struct inode *ip;
|
|
struct buf *bp;
|
|
int waitfor;
|
|
{
|
|
|
|
panic("softdep_update_inodeblock called");
|
|
}
|
|
|
|
void
|
|
softdep_fsync_mountdev(vp)
|
|
struct vnode *vp;
|
|
{
|
|
|
|
return;
|
|
}
|
|
|
|
int
|
|
softdep_flushworklist(oldmnt, countp, p)
|
|
struct mount *oldmnt;
|
|
int *countp;
|
|
struct proc *p;
|
|
{
|
|
|
|
*countp = 0;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
softdep_sync_metadata(ap)
|
|
struct vop_fsync_args /* {
|
|
struct vnode *a_vp;
|
|
struct ucred *a_cred;
|
|
int a_waitfor;
|
|
struct proc *a_p;
|
|
} */ *ap;
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
softdep_slowdown(vp)
|
|
struct vnode *vp;
|
|
{
|
|
|
|
panic("softdep_slowdown called");
|
|
}
|
|
|
|
void
|
|
softdep_releasefile(ip)
|
|
struct inode *ip; /* inode with the zero effective link count */
|
|
{
|
|
|
|
panic("softdep_releasefile called");
|
|
}
|
|
#endif /* SOFTUPDATES not configured in */
|