364 lines
13 KiB
C
364 lines
13 KiB
C
/* $NetBSD: ffs_vnops.c,v 1.31 2000/05/29 18:53:35 mycroft Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1982, 1986, 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/resourcevar.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/file.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/pool.h>
|
|
#include <sys/signalvar.h>
|
|
|
|
#include <vm/vm.h>
|
|
|
|
#include <uvm/uvm_extern.h>
|
|
|
|
#include <miscfs/fifofs/fifo.h>
|
|
#include <miscfs/genfs/genfs.h>
|
|
#include <miscfs/specfs/specdev.h>
|
|
|
|
#include <ufs/ufs/quota.h>
|
|
#include <ufs/ufs/inode.h>
|
|
#include <ufs/ufs/dir.h>
|
|
#include <ufs/ufs/ufs_extern.h>
|
|
#include <ufs/ufs/ufsmount.h>
|
|
|
|
#include <ufs/ffs/fs.h>
|
|
#include <ufs/ffs/ffs_extern.h>
|
|
|
|
/* Global vfs data structures for ufs. */
|
|
int (**ffs_vnodeop_p) __P((void *));
|
|
struct vnodeopv_entry_desc ffs_vnodeop_entries[] = {
|
|
{ &vop_default_desc, vn_default_error },
|
|
{ &vop_lookup_desc, ufs_lookup }, /* lookup */
|
|
{ &vop_create_desc, ufs_create }, /* create */
|
|
{ &vop_whiteout_desc, ufs_whiteout }, /* whiteout */
|
|
{ &vop_mknod_desc, ufs_mknod }, /* mknod */
|
|
{ &vop_open_desc, ufs_open }, /* open */
|
|
{ &vop_close_desc, ufs_close }, /* close */
|
|
{ &vop_access_desc, ufs_access }, /* access */
|
|
{ &vop_getattr_desc, ufs_getattr }, /* getattr */
|
|
{ &vop_setattr_desc, ufs_setattr }, /* setattr */
|
|
{ &vop_read_desc, ffs_read }, /* read */
|
|
{ &vop_write_desc, ffs_write }, /* write */
|
|
{ &vop_lease_desc, ufs_lease_check }, /* lease */
|
|
{ &vop_ioctl_desc, ufs_ioctl }, /* ioctl */
|
|
{ &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
|
|
{ &vop_poll_desc, ufs_poll }, /* poll */
|
|
{ &vop_revoke_desc, ufs_revoke }, /* revoke */
|
|
{ &vop_mmap_desc, ufs_mmap }, /* mmap */
|
|
{ &vop_fsync_desc, ffs_fsync }, /* fsync */
|
|
{ &vop_seek_desc, ufs_seek }, /* seek */
|
|
{ &vop_remove_desc, ufs_remove }, /* remove */
|
|
{ &vop_link_desc, ufs_link }, /* link */
|
|
{ &vop_rename_desc, ufs_rename }, /* rename */
|
|
{ &vop_mkdir_desc, ufs_mkdir }, /* mkdir */
|
|
{ &vop_rmdir_desc, ufs_rmdir }, /* rmdir */
|
|
{ &vop_symlink_desc, ufs_symlink }, /* symlink */
|
|
{ &vop_readdir_desc, ufs_readdir }, /* readdir */
|
|
{ &vop_readlink_desc, ufs_readlink }, /* readlink */
|
|
{ &vop_abortop_desc, ufs_abortop }, /* abortop */
|
|
{ &vop_inactive_desc, ufs_inactive }, /* inactive */
|
|
{ &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
|
|
{ &vop_lock_desc, ufs_lock }, /* lock */
|
|
{ &vop_unlock_desc, ufs_unlock }, /* unlock */
|
|
{ &vop_bmap_desc, ufs_bmap }, /* bmap */
|
|
{ &vop_strategy_desc, ufs_strategy }, /* strategy */
|
|
{ &vop_print_desc, ufs_print }, /* print */
|
|
{ &vop_islocked_desc, ufs_islocked }, /* islocked */
|
|
{ &vop_pathconf_desc, ufs_pathconf }, /* pathconf */
|
|
{ &vop_advlock_desc, ufs_advlock }, /* advlock */
|
|
{ &vop_blkatoff_desc, ffs_blkatoff }, /* blkatoff */
|
|
{ &vop_valloc_desc, ffs_valloc }, /* valloc */
|
|
{ &vop_balloc_desc, ffs_balloc }, /* balloc */
|
|
{ &vop_reallocblks_desc, ffs_reallocblks }, /* reallocblks */
|
|
{ &vop_vfree_desc, ffs_vfree }, /* vfree */
|
|
{ &vop_truncate_desc, ffs_truncate }, /* truncate */
|
|
{ &vop_update_desc, ffs_update }, /* update */
|
|
{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
|
|
{ (struct vnodeop_desc*)NULL, (int(*) __P((void*)))NULL }
|
|
};
|
|
struct vnodeopv_desc ffs_vnodeop_opv_desc =
|
|
{ &ffs_vnodeop_p, ffs_vnodeop_entries };
|
|
|
|
int (**ffs_specop_p) __P((void *));
|
|
struct vnodeopv_entry_desc ffs_specop_entries[] = {
|
|
{ &vop_default_desc, vn_default_error },
|
|
{ &vop_lookup_desc, spec_lookup }, /* lookup */
|
|
{ &vop_create_desc, spec_create }, /* create */
|
|
{ &vop_mknod_desc, spec_mknod }, /* mknod */
|
|
{ &vop_open_desc, spec_open }, /* open */
|
|
{ &vop_close_desc, ufsspec_close }, /* close */
|
|
{ &vop_access_desc, ufs_access }, /* access */
|
|
{ &vop_getattr_desc, ufs_getattr }, /* getattr */
|
|
{ &vop_setattr_desc, ufs_setattr }, /* setattr */
|
|
{ &vop_read_desc, ufsspec_read }, /* read */
|
|
{ &vop_write_desc, ufsspec_write }, /* write */
|
|
{ &vop_lease_desc, spec_lease_check }, /* lease */
|
|
{ &vop_ioctl_desc, spec_ioctl }, /* ioctl */
|
|
{ &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
|
|
{ &vop_poll_desc, spec_poll }, /* poll */
|
|
{ &vop_revoke_desc, spec_revoke }, /* revoke */
|
|
{ &vop_mmap_desc, spec_mmap }, /* mmap */
|
|
{ &vop_fsync_desc, ffs_fsync }, /* fsync */
|
|
{ &vop_seek_desc, spec_seek }, /* seek */
|
|
{ &vop_remove_desc, spec_remove }, /* remove */
|
|
{ &vop_link_desc, spec_link }, /* link */
|
|
{ &vop_rename_desc, spec_rename }, /* rename */
|
|
{ &vop_mkdir_desc, spec_mkdir }, /* mkdir */
|
|
{ &vop_rmdir_desc, spec_rmdir }, /* rmdir */
|
|
{ &vop_symlink_desc, spec_symlink }, /* symlink */
|
|
{ &vop_readdir_desc, spec_readdir }, /* readdir */
|
|
{ &vop_readlink_desc, spec_readlink }, /* readlink */
|
|
{ &vop_abortop_desc, spec_abortop }, /* abortop */
|
|
{ &vop_inactive_desc, ufs_inactive }, /* inactive */
|
|
{ &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
|
|
{ &vop_lock_desc, ufs_lock }, /* lock */
|
|
{ &vop_unlock_desc, ufs_unlock }, /* unlock */
|
|
{ &vop_bmap_desc, spec_bmap }, /* bmap */
|
|
{ &vop_strategy_desc, spec_strategy }, /* strategy */
|
|
{ &vop_print_desc, ufs_print }, /* print */
|
|
{ &vop_islocked_desc, ufs_islocked }, /* islocked */
|
|
{ &vop_pathconf_desc, spec_pathconf }, /* pathconf */
|
|
{ &vop_advlock_desc, spec_advlock }, /* advlock */
|
|
{ &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */
|
|
{ &vop_valloc_desc, spec_valloc }, /* valloc */
|
|
{ &vop_reallocblks_desc, spec_reallocblks }, /* reallocblks */
|
|
{ &vop_vfree_desc, ffs_vfree }, /* vfree */
|
|
{ &vop_truncate_desc, spec_truncate }, /* truncate */
|
|
{ &vop_update_desc, ffs_update }, /* update */
|
|
{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
|
|
{ (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL }
|
|
};
|
|
struct vnodeopv_desc ffs_specop_opv_desc =
|
|
{ &ffs_specop_p, ffs_specop_entries };
|
|
|
|
int (**ffs_fifoop_p) __P((void *));
|
|
struct vnodeopv_entry_desc ffs_fifoop_entries[] = {
|
|
{ &vop_default_desc, vn_default_error },
|
|
{ &vop_lookup_desc, fifo_lookup }, /* lookup */
|
|
{ &vop_create_desc, fifo_create }, /* create */
|
|
{ &vop_mknod_desc, fifo_mknod }, /* mknod */
|
|
{ &vop_open_desc, fifo_open }, /* open */
|
|
{ &vop_close_desc, ufsfifo_close }, /* close */
|
|
{ &vop_access_desc, ufs_access }, /* access */
|
|
{ &vop_getattr_desc, ufs_getattr }, /* getattr */
|
|
{ &vop_setattr_desc, ufs_setattr }, /* setattr */
|
|
{ &vop_read_desc, ufsfifo_read }, /* read */
|
|
{ &vop_write_desc, ufsfifo_write }, /* write */
|
|
{ &vop_lease_desc, fifo_lease_check }, /* lease */
|
|
{ &vop_ioctl_desc, fifo_ioctl }, /* ioctl */
|
|
{ &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
|
|
{ &vop_poll_desc, fifo_poll }, /* poll */
|
|
{ &vop_revoke_desc, fifo_revoke }, /* revoke */
|
|
{ &vop_mmap_desc, fifo_mmap }, /* mmap */
|
|
{ &vop_fsync_desc, ffs_fsync }, /* fsync */
|
|
{ &vop_seek_desc, fifo_seek }, /* seek */
|
|
{ &vop_remove_desc, fifo_remove }, /* remove */
|
|
{ &vop_link_desc, fifo_link }, /* link */
|
|
{ &vop_rename_desc, fifo_rename }, /* rename */
|
|
{ &vop_mkdir_desc, fifo_mkdir }, /* mkdir */
|
|
{ &vop_rmdir_desc, fifo_rmdir }, /* rmdir */
|
|
{ &vop_symlink_desc, fifo_symlink }, /* symlink */
|
|
{ &vop_readdir_desc, fifo_readdir }, /* readdir */
|
|
{ &vop_readlink_desc, fifo_readlink }, /* readlink */
|
|
{ &vop_abortop_desc, fifo_abortop }, /* abortop */
|
|
{ &vop_inactive_desc, ufs_inactive }, /* inactive */
|
|
{ &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
|
|
{ &vop_lock_desc, ufs_lock }, /* lock */
|
|
{ &vop_unlock_desc, ufs_unlock }, /* unlock */
|
|
{ &vop_bmap_desc, fifo_bmap }, /* bmap */
|
|
{ &vop_strategy_desc, fifo_strategy }, /* strategy */
|
|
{ &vop_print_desc, ufs_print }, /* print */
|
|
{ &vop_islocked_desc, ufs_islocked }, /* islocked */
|
|
{ &vop_pathconf_desc, fifo_pathconf }, /* pathconf */
|
|
{ &vop_advlock_desc, fifo_advlock }, /* advlock */
|
|
{ &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */
|
|
{ &vop_valloc_desc, fifo_valloc }, /* valloc */
|
|
{ &vop_reallocblks_desc, fifo_reallocblks }, /* reallocblks */
|
|
{ &vop_vfree_desc, ffs_vfree }, /* vfree */
|
|
{ &vop_truncate_desc, fifo_truncate }, /* truncate */
|
|
{ &vop_update_desc, ffs_update }, /* update */
|
|
{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
|
|
{ (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL }
|
|
};
|
|
struct vnodeopv_desc ffs_fifoop_opv_desc =
|
|
{ &ffs_fifoop_p, ffs_fifoop_entries };
|
|
|
|
int doclusterread = 1;
|
|
int doclusterwrite = 1;
|
|
|
|
#include <ufs/ufs/ufs_readwrite.c>
|
|
|
|
/*
|
|
* Synch an open file.
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
ffs_fsync(v)
|
|
void *v;
|
|
{
|
|
struct vop_fsync_args /* {
|
|
struct vnode *a_vp;
|
|
struct ucred *a_cred;
|
|
int a_flags;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct buf *bp, *nbp;
|
|
int s, error, passes, skipmeta;
|
|
|
|
if (vp->v_type == VBLK &&
|
|
vp->v_specmountpoint != NULL &&
|
|
(vp->v_specmountpoint->mnt_flag & MNT_SOFTDEP))
|
|
softdep_fsync_mountdev(vp);
|
|
|
|
/*
|
|
* Flush all dirty buffers associated with a vnode
|
|
*/
|
|
passes = NIADDR + 1;
|
|
skipmeta = 0;
|
|
if (ap->a_flags & (FSYNC_DATAONLY|FSYNC_WAIT))
|
|
skipmeta = 1;
|
|
s = splbio();
|
|
loop:
|
|
for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp;
|
|
bp = LIST_NEXT(bp, b_vnbufs))
|
|
bp->b_flags &= ~B_SCANNED;
|
|
for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) {
|
|
nbp = LIST_NEXT(bp, b_vnbufs);
|
|
if (bp->b_flags & (B_BUSY | B_SCANNED))
|
|
continue;
|
|
if ((bp->b_flags & B_DELWRI) == 0)
|
|
panic("ffs_fsync: not dirty");
|
|
if (skipmeta && bp->b_lblkno < 0)
|
|
continue;
|
|
bp->b_flags |= B_BUSY | B_VFLUSH | B_SCANNED;
|
|
splx(s);
|
|
/*
|
|
* On our final pass through, do all I/O synchronously
|
|
* so that we can find out if our flush is failing
|
|
* because of write errors.
|
|
*/
|
|
if (passes > 0 || !(ap->a_flags & FSYNC_WAIT))
|
|
(void) bawrite(bp);
|
|
else if ((error = bwrite(bp)) != 0)
|
|
return (error);
|
|
s = splbio();
|
|
/*
|
|
* Since we may have slept during the I/O, we need
|
|
* to start from a known point.
|
|
*/
|
|
nbp = LIST_FIRST(&vp->v_dirtyblkhd);
|
|
}
|
|
if (skipmeta && !(ap->a_flags & FSYNC_DATAONLY)) {
|
|
skipmeta = 0;
|
|
goto loop;
|
|
}
|
|
if (ap->a_flags & FSYNC_WAIT) {
|
|
while (vp->v_numoutput) {
|
|
vp->v_flag |= VBWAIT;
|
|
(void) tsleep(&vp->v_numoutput, PRIBIO + 1,
|
|
"ffsfsync", 0);
|
|
}
|
|
splx(s);
|
|
|
|
if (ap->a_flags & FSYNC_DATAONLY)
|
|
return (0);
|
|
|
|
/*
|
|
* Ensure that any filesystem metadata associated
|
|
* with the vnode has been written.
|
|
*/
|
|
if ((error = softdep_sync_metadata(ap)) != 0)
|
|
return (error);
|
|
|
|
s = splbio();
|
|
if (!LIST_EMPTY(&vp->v_dirtyblkhd)) {
|
|
/*
|
|
* Block devices associated with filesystems may
|
|
* have new I/O requests posted for them even if
|
|
* the vnode is locked, so no amount of trying will
|
|
* get them clean. Thus we give block devices a
|
|
* good effort, then just give up. For all other file
|
|
* types, go around and try again until it is clean.
|
|
*/
|
|
if (passes > 0) {
|
|
passes--;
|
|
goto loop;
|
|
}
|
|
#ifdef DIAGNOSTIC
|
|
if (vp->v_type != VBLK)
|
|
vprint("ffs_fsync: dirty", vp);
|
|
#endif
|
|
}
|
|
}
|
|
splx(s);
|
|
return (VOP_UPDATE(vp, NULL, NULL,
|
|
(ap->a_flags & FSYNC_WAIT) ? UPDATE_WAIT : 0));
|
|
}
|
|
|
|
/*
|
|
* Reclaim an inode so that it can be used for other purposes.
|
|
*/
|
|
int
|
|
ffs_reclaim(v)
|
|
void *v;
|
|
{
|
|
struct vop_reclaim_args /* {
|
|
struct vnode *a_vp;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
int error;
|
|
|
|
if ((error = ufs_reclaim(vp, ap->a_p)) != 0)
|
|
return (error);
|
|
/*
|
|
* XXX MFS ends up here, too, to free an inode. Should we create
|
|
* XXX a separate pool for MFS inodes?
|
|
*/
|
|
pool_put(&ffs_inode_pool, vp->v_data);
|
|
vp->v_data = NULL;
|
|
return (0);
|
|
}
|