freebsd-dev/sys/gnu/ext2fs/ext2_vnops.c
Bruce Evans ef91bd5734 Removed unused #includes. The need for most of them went away with
recent changes (docluster* and vfs improvements).
1997-10-27 13:33:47 +00:00

198 lines
5.9 KiB
C

/*
* modified for EXT2FS support in Lites 1.1
*
* Aug 1995, Godmar Back (gback@cs.utah.edu)
* University of Utah, Department of Computer Science
*/
/*
* 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.
*
* @(#)ext2_vnops.c 8.7 (Berkeley) 2/3/94
*/
#if !defined(__FreeBSD__)
#include "fifo.h"
#include "diagnostic.h"
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/resourcevar.h>
#include <sys/kernel.h>
#include <sys/stat.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/mount.h>
#include <sys/time.h>
#include <sys/vnode.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
#if !defined(__FreeBSD__)
#include <ufs/ufs/lockf.h>
#else
#include <sys/signalvar.h>
#endif
#include <ufs/ufs/quota.h>
#include <ufs/ufs/inode.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/ufs_extern.h>
#include <gnu/ext2fs/ext2_fs_sb.h>
#include <gnu/ext2fs/fs.h>
#include <gnu/ext2fs/ext2_extern.h>
static int ext2_fsync __P((struct vop_fsync_args *));
static int ext2_read __P((struct vop_read_args *));
static int ext2_write __P((struct vop_write_args *));
/* Global vfs data structures for ufs. */
vop_t **ext2_vnodeop_p;
static struct vnodeopv_entry_desc ext2_vnodeop_entries[] = {
{ &vop_default_desc, (vop_t *) ufs_vnoperate },
{ &vop_cachedlookup_desc, (vop_t *) ext2_lookup },
{ &vop_fsync_desc, (vop_t *) ext2_fsync },
{ &vop_inactive_desc, (vop_t *) ext2_inactive },
{ &vop_lookup_desc, (vop_t *) vfs_cache_lookup },
{ &vop_read_desc, (vop_t *) ext2_read },
{ &vop_readdir_desc, (vop_t *) ext2_readdir },
{ &vop_reallocblks_desc, (vop_t *) ext2_reallocblks },
{ &vop_write_desc, (vop_t *) ext2_write },
{ NULL, NULL }
};
static struct vnodeopv_desc ext2fs_vnodeop_opv_desc =
{ &ext2_vnodeop_p, ext2_vnodeop_entries };
vop_t **ext2_specop_p;
static struct vnodeopv_entry_desc ext2_specop_entries[] = {
{ &vop_default_desc, (vop_t *) ufs_vnoperatespec },
{ &vop_fsync_desc, (vop_t *) ext2_fsync },
{ &vop_inactive_desc, (vop_t *) ext2_inactive },
{ NULL, NULL }
};
static struct vnodeopv_desc ext2fs_specop_opv_desc =
{ &ext2_specop_p, ext2_specop_entries };
vop_t **ext2_fifoop_p;
static struct vnodeopv_entry_desc ext2_fifoop_entries[] = {
{ &vop_default_desc, (vop_t *) ufs_vnoperatefifo },
{ &vop_fsync_desc, (vop_t *) ext2_fsync },
{ &vop_inactive_desc, (vop_t *) ext2_inactive },
{ NULL, NULL }
};
static struct vnodeopv_desc ext2fs_fifoop_opv_desc =
{ &ext2_fifoop_p, ext2_fifoop_entries };
#if defined(__FreeBSD__)
VNODEOP_SET(ext2fs_vnodeop_opv_desc);
VNODEOP_SET(ext2fs_specop_opv_desc);
VNODEOP_SET(ext2fs_fifoop_opv_desc);
#endif
#include <gnu/ext2fs/ext2_readwrite.c>
/*
* Synch an open file.
*/
/* ARGSUSED */
static int
ext2_fsync(ap)
struct vop_fsync_args /* {
struct vnode *a_vp;
struct ucred *a_cred;
int a_waitfor;
struct proc *a_p;
} */ *ap;
{
register struct vnode *vp = ap->a_vp;
register struct buf *bp;
struct timeval tv;
struct buf *nbp;
int s;
/*
* Clean memory object.
* XXX add this to all file systems.
* XXX why is all this fs specific?
*/
#if !defined(__FreeBSD__)
vn_pager_sync(vp, ap->a_waitfor);
#endif
/*
* Flush all dirty buffers associated with a vnode.
*/
ext2_discard_prealloc(VTOI(vp));
loop:
s = splbio();
for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) {
nbp = bp->b_vnbufs.le_next;
if ((bp->b_flags & B_BUSY))
continue;
if ((bp->b_flags & B_DELWRI) == 0)
panic("ext2_fsync: not dirty");
bremfree(bp);
bp->b_flags |= B_BUSY;
splx(s);
/*
* Wait for I/O associated with indirect blocks to complete,
* since there is no way to quickly wait for them below.
*/
if (bp->b_vp == vp || ap->a_waitfor == MNT_NOWAIT)
(void) bawrite(bp);
else
(void) bwrite(bp);
goto loop;
}
if (ap->a_waitfor == MNT_WAIT) {
while (vp->v_numoutput) {
vp->v_flag |= VBWAIT;
#if !defined(__FreeBSD__)
sleep((caddr_t)&vp->v_numoutput, PRIBIO + 1);
#else
tsleep((caddr_t)&vp->v_numoutput, PRIBIO + 1, "extfsn", 0);
#endif
}
#if DIAGNOSTIC
if (vp->v_dirtyblkhd.lh_first) {
vprint("ext2_fsync: dirty", vp);
goto loop;
}
#endif
}
splx(s);
gettime(&tv);
return (UFS_UPDATE(ap->a_vp, &tv, &tv, ap->a_waitfor == MNT_WAIT));
}