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8886b0f4b2
NetBSD/sys/ufs/lfs/lfs_vnops.c
perseant 8886b0f4b2 Phase one of my three-phase plan to make LFS play nice with UBC, and bug-fixes 
I found while making sure there weren't any new ones.

* Make the write clusters keep track of the buffers whose blocks they contain.
  This should make it possible to (1) write clusters using a page mapping
  instead of malloc, if desired, and (2) schedule blocks for rewriting
  (somewhere else) if a write error occurs.  Code is present to use
  pagemove() to construct the clusters but that is untested and will go away
  anyway in favor of page mapping.
* DEBUG now keeps a log of Ifile writes, so that any lingering instances of
  the "dirty bufs" problem can be properly debugged.
* Keep track of whether the Ifile has been dirtied by various routines that
  can be called by lfs_segwrite, and loop on that until it is clean, for
  a checkpoint.  Checkpoints need to be squeaky clean.
* Warn the user (once) if the Ifile grows larger than is reasonable for their
  buffer cache.  Both lfs_mountfs and lfs_unmount check since the Ifile can
  grow.
* If an inode is not found in a disk block, try rereading the block, under
  the assumption that the block was copied to a cluster and then freed.
* Protect WRITEINPROG() with splbio() to fix a hang in lfs_update.
2002-05-14 20:03:53 +00:00

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/* $NetBSD: lfs_vnops.c,v 1.63 2002/05/14 20:03:55 perseant Exp $ */
/*-
* Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Konrad E. Schroder <perseant@hhhh.org>.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Copyright (c) 1986, 1989, 1991, 1993, 1995
* 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.
*
* @(#)lfs_vnops.c 8.13 (Berkeley) 6/10/95
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: lfs_vnops.c,v 1.63 2002/05/14 20:03:55 perseant Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.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/conf.h>
#include <sys/mount.h>
#include <sys/vnode.h>
#include <sys/malloc.h>
#include <sys/pool.h>
#include <sys/signalvar.h>
#include <miscfs/fifofs/fifo.h>
#include <miscfs/genfs/genfs.h>
#include <miscfs/specfs/specdev.h>
#include <ufs/ufs/inode.h>
#include <ufs/ufs/dir.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/ufs_extern.h>
#include <ufs/lfs/lfs.h>
#include <ufs/lfs/lfs_extern.h>
/* Global vfs data structures for lfs. */
int (**lfs_vnodeop_p)(void *);
const struct vnodeopv_entry_desc lfs_vnodeop_entries[] = {
{ &vop_default_desc, vn_default_error },
{ &vop_lookup_desc, ufs_lookup }, /* lookup */
{ &vop_create_desc, lfs_create }, /* create */
{ &vop_whiteout_desc, lfs_whiteout }, /* whiteout */
{ &vop_mknod_desc, lfs_mknod }, /* mknod */
{ &vop_open_desc, ufs_open }, /* open */
{ &vop_close_desc, lfs_close }, /* close */
{ &vop_access_desc, ufs_access }, /* access */
{ &vop_getattr_desc, lfs_getattr }, /* getattr */
{ &vop_setattr_desc, lfs_setattr }, /* setattr */
{ &vop_read_desc, lfs_read }, /* read */
{ &vop_write_desc, lfs_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, lfs_fsync }, /* fsync */
{ &vop_seek_desc, ufs_seek }, /* seek */
{ &vop_remove_desc, lfs_remove }, /* remove */
{ &vop_link_desc, lfs_link }, /* link */
{ &vop_rename_desc, lfs_rename }, /* rename */
{ &vop_mkdir_desc, lfs_mkdir }, /* mkdir */
{ &vop_rmdir_desc, lfs_rmdir }, /* rmdir */
{ &vop_symlink_desc, lfs_symlink }, /* symlink */
{ &vop_readdir_desc, ufs_readdir }, /* readdir */
{ &vop_readlink_desc, ufs_readlink }, /* readlink */
{ &vop_abortop_desc, ufs_abortop }, /* abortop */
{ &vop_inactive_desc, lfs_inactive }, /* inactive */
{ &vop_reclaim_desc, lfs_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, lfs_blkatoff }, /* blkatoff */
{ &vop_valloc_desc, lfs_valloc }, /* valloc */
{ &vop_balloc_desc, lfs_balloc }, /* balloc */
{ &vop_vfree_desc, lfs_vfree }, /* vfree */
{ &vop_truncate_desc, lfs_truncate }, /* truncate */
{ &vop_update_desc, lfs_update }, /* update */
{ &vop_bwrite_desc, lfs_bwrite }, /* bwrite */
{ &vop_getpages_desc, lfs_getpages }, /* getpages */
{ &vop_putpages_desc, lfs_putpages }, /* putpages */
{ NULL, NULL }
};
const struct vnodeopv_desc lfs_vnodeop_opv_desc =
{ &lfs_vnodeop_p, lfs_vnodeop_entries };
int (**lfs_specop_p)(void *);
const struct vnodeopv_entry_desc lfs_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, lfs_getattr }, /* getattr */
{ &vop_setattr_desc, lfs_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, spec_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, lfs_inactive }, /* inactive */
{ &vop_reclaim_desc, lfs_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_vfree_desc, lfs_vfree }, /* vfree */
{ &vop_truncate_desc, spec_truncate }, /* truncate */
{ &vop_update_desc, lfs_update }, /* update */
{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
{ &vop_getpages_desc, spec_getpages }, /* getpages */
{ &vop_putpages_desc, spec_putpages }, /* putpages */
{ NULL, NULL }
};
const struct vnodeopv_desc lfs_specop_opv_desc =
{ &lfs_specop_p, lfs_specop_entries };
int (**lfs_fifoop_p)(void *);
const struct vnodeopv_entry_desc lfs_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, lfs_getattr }, /* getattr */
{ &vop_setattr_desc, lfs_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, fifo_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, lfs_inactive }, /* inactive */
{ &vop_reclaim_desc, lfs_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_vfree_desc, lfs_vfree }, /* vfree */
{ &vop_truncate_desc, fifo_truncate }, /* truncate */
{ &vop_update_desc, lfs_update }, /* update */
{ &vop_bwrite_desc, lfs_bwrite }, /* bwrite */
{ &vop_putpages_desc, fifo_putpages }, /* putpages */
{ NULL, NULL }
};
const struct vnodeopv_desc lfs_fifoop_opv_desc =
{ &lfs_fifoop_p, lfs_fifoop_entries };
/*
* A function version of LFS_ITIMES, for the UFS functions which call ITIMES
*/
void
lfs_itimes(struct inode *ip, struct timespec *acc, struct timespec *mod, struct timespec *cre)
{
LFS_ITIMES(ip, acc, mod, cre);
}
#define LFS_READWRITE
#include <ufs/ufs/ufs_readwrite.c>
#undef LFS_READWRITE
/*
* Synch an open file.
*/
/* ARGSUSED */
int
lfs_fsync(void *v)
{
struct vop_fsync_args /* {
struct vnode *a_vp;
struct ucred *a_cred;
int a_flags;
off_t offlo;
off_t offhi;
struct proc *a_p;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
int error;
/* Ignore the trickle syncer */
if (ap->a_flags & FSYNC_LAZY)
return 0;
simple_lock(&vp->v_interlock);
error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo),
round_page(ap->a_offhi), PGO_CLEANIT | PGO_SYNCIO);
if (error)
return error;
error = VOP_UPDATE(vp, NULL, NULL,
(ap->a_flags & FSYNC_WAIT) != 0 ? UPDATE_WAIT : 0);
#ifdef DEBUG
/*
* If we were called from vinvalbuf and lfs_update
* didn't flush all our buffers, we're in trouble.
*/
if ((ap->a_flags & FSYNC_WAIT) && vp->v_dirtyblkhd.lh_first != NULL) {
struct buf *bp;
bp = vp->v_dirtyblkhd.lh_first;
printf("lfs_fsync: ino %d failed to sync", VTOI(vp)->i_number);
printf("lfs_fsync: iocount = %d\n", VTOI(vp)->i_lfs->lfs_iocount);
printf("lfs_fsync: flags are 0x%x, numoutput=%d\n",
VTOI(vp)->i_flag, vp->v_numoutput);
printf("lfs_fsync: writecount=%ld\n", vp->v_writecount);
printf("lfs_fsync: first bp: %p, flags=0x%lx, lbn=%d\n",
bp, bp->b_flags, bp->b_lblkno);
}
#endif
return error;
}
/*
* Take IN_ADIROP off, then call ufs_inactive.
*/
int
lfs_inactive(void *v)
{
struct vop_inactive_args /* {
struct vnode *a_vp;
struct proc *a_p;
} */ *ap = v;
struct inode *ip = VTOI(ap->a_vp);
if (ip->i_flag & IN_ADIROP)
--ip->i_lfs->lfs_nadirop;
ip->i_flag &= ~IN_ADIROP;
return ufs_inactive(v);
}
/*
* These macros are used to bracket UFS directory ops, so that we can
* identify all the pages touched during directory ops which need to
* be ordered and flushed atomically, so that they may be recovered.
*/
/*
* XXX KS - Because we have to mark nodes VDIROP in order to prevent
* the cache from reclaiming them while a dirop is in progress, we must
* also manage the number of nodes so marked (otherwise we can run out).
* We do this by setting lfs_dirvcount to the number of marked vnodes; it
* is decremented during segment write, when VDIROP is taken off.
*/
#define SET_DIROP(vp) lfs_set_dirop(vp)
static int lfs_set_dirop(struct vnode *);
extern int lfs_dirvcount;
static int
lfs_set_dirop(struct vnode *vp)
{
struct lfs *fs;
int error;
fs = VTOI(vp)->i_lfs;
/*
* We might need one directory block plus supporting indirect blocks,
* plus an inode block and ifile page for the new vnode.
*/
if ((error = lfs_reserve(fs, vp, btofsb(fs, (NIADDR + 3) << fs->lfs_bshift))) != 0)
return (error);
if (fs->lfs_dirops == 0)
lfs_check(vp, LFS_UNUSED_LBN, 0);
while (fs->lfs_writer || lfs_dirvcount > LFS_MAXDIROP) {
if (fs->lfs_writer)
tsleep(&fs->lfs_dirops, PRIBIO + 1, "lfs_sdirop", 0);
if (lfs_dirvcount > LFS_MAXDIROP && fs->lfs_dirops == 0) {
++fs->lfs_writer;
lfs_flush(fs, 0);
if (--fs->lfs_writer == 0)
wakeup(&fs->lfs_dirops);
}
if (lfs_dirvcount > LFS_MAXDIROP) {
#ifdef DEBUG_LFS
printf("lfs_set_dirop: sleeping with dirops=%d, "
"dirvcount=%d\n", fs->lfs_dirops,
lfs_dirvcount);
#endif
if ((error = tsleep(&lfs_dirvcount, PCATCH|PUSER,
"lfs_maxdirop", 0)) != 0) {
lfs_reserve(fs, vp, -btofsb(fs, (NIADDR + 3) << fs->lfs_bshift));
return error;
}
}
}
++fs->lfs_dirops;
fs->lfs_doifile = 1;
/* Hold a reference so SET_ENDOP will be happy */
lfs_vref(vp);
return 0;
}
#define SET_ENDOP(fs,vp,str) { \
--(fs)->lfs_dirops; \
if (!(fs)->lfs_dirops) { \
if ((fs)->lfs_nadirop) { \
panic("SET_ENDOP: %s: no dirops but nadirop=%d\n", \
(str), (fs)->lfs_nadirop); \
} \
wakeup(&(fs)->lfs_writer); \
lfs_check((vp),LFS_UNUSED_LBN,0); \
} \
lfs_reserve((fs), vp, -btofsb((fs), (NIADDR + 3) << (fs)->lfs_bshift)); /* XXX */ \
lfs_vunref(vp); \
}
#define MARK_VNODE(dvp) do { \
if (!((dvp)->v_flag & VDIROP)) { \
(void)lfs_vref(dvp); \
++lfs_dirvcount; \
} \
(dvp)->v_flag |= VDIROP; \
if (!(VTOI(dvp)->i_flag & IN_ADIROP)) { \
++VTOI(dvp)->i_lfs->lfs_nadirop; \
} \
VTOI(dvp)->i_flag |= IN_ADIROP; \
} while (0)
#define UNMARK_VNODE(vp) lfs_unmark_vnode(vp)
void lfs_unmark_vnode(struct vnode *vp)
{
struct inode *ip;
ip = VTOI(vp);
if (ip->i_flag & IN_ADIROP)
--ip->i_lfs->lfs_nadirop;
ip->i_flag &= ~IN_ADIROP;
}
int
lfs_symlink(void *v)
{
struct vop_symlink_args /* {
struct vnode *a_dvp;
struct vnode **a_vpp;
struct componentname *a_cnp;
struct vattr *a_vap;
char *a_target;
} */ *ap = v;
int error;
if ((error = SET_DIROP(ap->a_dvp)) != 0) {
vput(ap->a_dvp);
return error;
}
MARK_VNODE(ap->a_dvp);
error = ufs_symlink(ap);
UNMARK_VNODE(ap->a_dvp);
if (*(ap->a_vpp))
UNMARK_VNODE(*(ap->a_vpp));
SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"symlink");
return (error);
}
int
lfs_mknod(void *v)
{
struct vop_mknod_args /* {
struct vnode *a_dvp;
struct vnode **a_vpp;
struct componentname *a_cnp;
struct vattr *a_vap;
} */ *ap = v;
struct vattr *vap = ap->a_vap;
struct vnode **vpp = ap->a_vpp;
struct inode *ip;
int error;
struct mount *mp;
ino_t ino;
if ((error = SET_DIROP(ap->a_dvp)) != 0) {
vput(ap->a_dvp);
return error;
}
MARK_VNODE(ap->a_dvp);
error = ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
ap->a_dvp, vpp, ap->a_cnp);
UNMARK_VNODE(ap->a_dvp);
if (*(ap->a_vpp))
UNMARK_VNODE(*(ap->a_vpp));
/* Either way we're done with the dirop at this point */
SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mknod");
if (error)
return (error);
ip = VTOI(*vpp);
mp = (*vpp)->v_mount;
ino = ip->i_number;
ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
if (vap->va_rdev != VNOVAL) {
/*
* Want to be able to use this to make badblock
* inodes, so don't truncate the dev number.
*/
#if 0
ip->i_ffs_rdev = ufs_rw32(vap->va_rdev,
UFS_MPNEEDSWAP((*vpp)->v_mount));
#else
ip->i_ffs_rdev = vap->va_rdev;
#endif
}
/*
* Call fsync to write the vnode so that we don't have to deal with
* flushing it when it's marked VDIROP|VXLOCK.
*
* XXX KS - If we can't flush we also can't call vgone(), so must
* return. But, that leaves this vnode in limbo, also not good.
* Can this ever happen (barring hardware failure)?
*/
if ((error = VOP_FSYNC(*vpp, NOCRED, FSYNC_WAIT, 0, 0, curproc)) != 0) {
printf("Couldn't fsync in mknod (ino %d)---what do I do?\n",
VTOI(*vpp)->i_number);
return (error);
}
/*
* Remove vnode so that it will be reloaded by VFS_VGET and
* checked to see if it is an alias of an existing entry in
* the inode cache.
*/
/* Used to be vput, but that causes us to call VOP_INACTIVE twice. */
VOP_UNLOCK(*vpp, 0);
lfs_vunref(*vpp);
(*vpp)->v_type = VNON;
vgone(*vpp);
error = VFS_VGET(mp, ino, vpp);
if (error != 0) {
*vpp = NULL;
return (error);
}
return (0);
}
int
lfs_create(void *v)
{
struct vop_create_args /* {
struct vnode *a_dvp;
struct vnode **a_vpp;
struct componentname *a_cnp;
struct vattr *a_vap;
} */ *ap = v;
int error;
if ((error = SET_DIROP(ap->a_dvp)) != 0) {
vput(ap->a_dvp);
return error;
}
MARK_VNODE(ap->a_dvp);
error = ufs_create(ap);
UNMARK_VNODE(ap->a_dvp);
if (*(ap->a_vpp))
UNMARK_VNODE(*(ap->a_vpp));
SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"create");
return (error);
}
int
lfs_whiteout(void *v)
{
struct vop_whiteout_args /* {
struct vnode *a_dvp;
struct componentname *a_cnp;
int a_flags;
} */ *ap = v;
int error;
if ((error = SET_DIROP(ap->a_dvp)) != 0)
/* XXX no unlock here? */
return error;
MARK_VNODE(ap->a_dvp);
error = ufs_whiteout(ap);
UNMARK_VNODE(ap->a_dvp);
SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"whiteout");
return (error);
}
int
lfs_mkdir(void *v)
{
struct vop_mkdir_args /* {
struct vnode *a_dvp;
struct vnode **a_vpp;
struct componentname *a_cnp;
struct vattr *a_vap;
} */ *ap = v;
int error;
if ((error = SET_DIROP(ap->a_dvp)) != 0) {
vput(ap->a_dvp);
return error;
}
MARK_VNODE(ap->a_dvp);
error = ufs_mkdir(ap);
UNMARK_VNODE(ap->a_dvp);
if (*(ap->a_vpp))
UNMARK_VNODE(*(ap->a_vpp));
SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"mkdir");
return (error);
}
int
lfs_remove(void *v)
{
struct vop_remove_args /* {
struct vnode *a_dvp;
struct vnode *a_vp;
struct componentname *a_cnp;
} */ *ap = v;
struct vnode *dvp, *vp;
int error;
dvp = ap->a_dvp;
vp = ap->a_vp;
if ((error = SET_DIROP(dvp)) != 0) {
if (dvp == vp)
vrele(vp);
else
vput(vp);
vput(dvp);
return error;
}
MARK_VNODE(dvp);
MARK_VNODE(vp);
error = ufs_remove(ap);
UNMARK_VNODE(dvp);
UNMARK_VNODE(vp);
/*
* If ufs_remove failed, vp doesn't need to be VDIROP any more.
* If it succeeded, we can go ahead and wipe out vp, since
* its loss won't appear on disk until checkpoint, and by then
* dvp will have been written, completing the dirop.
*/
--lfs_dirvcount;
vp->v_flag &= ~VDIROP;
wakeup(&lfs_dirvcount);
vrele(vp);
SET_ENDOP(VTOI(dvp)->i_lfs,dvp,"remove");
return (error);
}
int
lfs_rmdir(void *v)
{
struct vop_rmdir_args /* {
struct vnodeop_desc *a_desc;
struct vnode *a_dvp;
struct vnode *a_vp;
struct componentname *a_cnp;
} */ *ap = v;
int error;
if ((error = SET_DIROP(ap->a_dvp)) != 0) {
vrele(ap->a_dvp);
if (ap->a_vp->v_mountedhere != NULL)
VOP_UNLOCK(ap->a_dvp, 0);
vput(ap->a_vp);
return error;
}
MARK_VNODE(ap->a_dvp);
MARK_VNODE(ap->a_vp);
error = ufs_rmdir(ap);
UNMARK_VNODE(ap->a_dvp);
UNMARK_VNODE(ap->a_vp);
/*
* If ufs_rmdir failed, vp doesn't need to be VDIROP any more.
* If it succeeded, we can go ahead and wipe out vp, since
* its loss won't appear on disk until checkpoint, and by then
* dvp will have been written, completing the dirop.
*/
--lfs_dirvcount;
ap->a_vp->v_flag &= ~VDIROP;
wakeup(&lfs_dirvcount);
vrele(ap->a_vp);
SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"rmdir");
return (error);
}
int
lfs_link(void *v)
{
struct vop_link_args /* {
struct vnode *a_dvp;
struct vnode *a_vp;
struct componentname *a_cnp;
} */ *ap = v;
int error;
if ((error = SET_DIROP(ap->a_dvp)) != 0) {
vput(ap->a_dvp);
return error;
}
MARK_VNODE(ap->a_dvp);
error = ufs_link(ap);
UNMARK_VNODE(ap->a_dvp);
SET_ENDOP(VTOI(ap->a_dvp)->i_lfs,ap->a_dvp,"link");
return (error);
}
int
lfs_rename(void *v)
{
struct vop_rename_args /* {
struct vnode *a_fdvp;
struct vnode *a_fvp;
struct componentname *a_fcnp;
struct vnode *a_tdvp;
struct vnode *a_tvp;
struct componentname *a_tcnp;
} */ *ap = v;
struct vnode *tvp, *fvp, *tdvp, *fdvp;
int error;
struct lfs *fs;
fs = VTOI(ap->a_fdvp)->i_lfs;
tvp = ap->a_tvp;
tdvp = ap->a_tdvp;
fvp = ap->a_fvp;
fdvp = ap->a_fdvp;
/*
* Check for cross-device rename.
* If it is, we don't want to set dirops, just error out.
* (In particular note that MARK_VNODE(tdvp) will DTWT on
* a cross-device rename.)
*
* Copied from ufs_rename.
*/
if ((fvp->v_mount != tdvp->v_mount) ||
(tvp && (fvp->v_mount != tvp->v_mount))) {
error = EXDEV;
goto errout;
}
if ((error = SET_DIROP(fdvp)) != 0)
goto errout;
MARK_VNODE(fdvp);
MARK_VNODE(tdvp);
error = ufs_rename(ap);
UNMARK_VNODE(fdvp);
UNMARK_VNODE(tdvp);
SET_ENDOP(fs,fdvp,"rename");
return (error);
errout:
VOP_ABORTOP(tdvp, ap->a_tcnp); /* XXX, why not in NFS? */
if (tdvp == tvp)
vrele(tdvp);
else
vput(tdvp);
if (tvp)
vput(tvp);
VOP_ABORTOP(fdvp, ap->a_fcnp); /* XXX, why not in NFS? */
vrele(fdvp);
vrele(fvp);
return (error);
}
/* XXX hack to avoid calling ITIMES in getattr */
int
lfs_getattr(void *v)
{
struct vop_getattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
struct inode *ip = VTOI(vp);
struct vattr *vap = ap->a_vap;
struct lfs *fs = ip->i_lfs;
/*
* Copy from inode table
*/
vap->va_fsid = ip->i_dev;
vap->va_fileid = ip->i_number;
vap->va_mode = ip->i_ffs_mode & ~IFMT;
vap->va_nlink = ip->i_ffs_nlink;
vap->va_uid = ip->i_ffs_uid;
vap->va_gid = ip->i_ffs_gid;
vap->va_rdev = (dev_t)ip->i_ffs_rdev;
vap->va_size = vp->v_size;
vap->va_atime.tv_sec = ip->i_ffs_atime;
vap->va_atime.tv_nsec = ip->i_ffs_atimensec;
vap->va_mtime.tv_sec = ip->i_ffs_mtime;
vap->va_mtime.tv_nsec = ip->i_ffs_mtimensec;
vap->va_ctime.tv_sec = ip->i_ffs_ctime;
vap->va_ctime.tv_nsec = ip->i_ffs_ctimensec;
vap->va_flags = ip->i_ffs_flags;
vap->va_gen = ip->i_ffs_gen;
/* this doesn't belong here */
if (vp->v_type == VBLK)
vap->va_blocksize = BLKDEV_IOSIZE;
else if (vp->v_type == VCHR)
vap->va_blocksize = MAXBSIZE;
else
vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize;
vap->va_bytes = fsbtob(fs, (u_quad_t)ip->i_ffs_blocks);
vap->va_type = vp->v_type;
vap->va_filerev = ip->i_modrev;
return (0);
}
/*
* Check to make sure the inode blocks won't choke the buffer
* cache, then call ufs_setattr as usual.
*/
int
lfs_setattr(void *v)
{
struct vop_getattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
lfs_check(vp, LFS_UNUSED_LBN, 0);
return ufs_setattr(v);
}
/*
* Close called
*
* XXX -- we were using ufs_close, but since it updates the
* times on the inode, we might need to bump the uinodes
* count.
*/
/* ARGSUSED */
int
lfs_close(void *v)
{
struct vop_close_args /* {
struct vnode *a_vp;
int a_fflag;
struct ucred *a_cred;
struct proc *a_p;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
struct inode *ip = VTOI(vp);
struct timespec ts;
simple_lock(&vp->v_interlock);
if (vp->v_usecount > 1) {
TIMEVAL_TO_TIMESPEC(&time, &ts);
LFS_ITIMES(ip, &ts, &ts, &ts);
}
simple_unlock(&vp->v_interlock);
return (0);
}
/*
* Reclaim an inode so that it can be used for other purposes.
*/
int lfs_no_inactive = 0;
int
lfs_reclaim(void *v)
{
struct vop_reclaim_args /* {
struct vnode *a_vp;
struct proc *a_p;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
int error;
LFS_CLR_UINO(VTOI(vp), IN_ALLMOD);
if ((error = ufs_reclaim(vp, ap->a_p)))
return (error);
pool_put(&lfs_inode_pool, vp->v_data);
vp->v_data = NULL;
return (0);
}
int
lfs_getpages(void *v)
{
struct vop_getpages_args /* {
struct vnode *a_vp;
voff_t a_offset;
struct vm_page **a_m;
int *a_count;
int a_centeridx;
vm_prot_t a_access_type;
int a_advice;
int a_flags;
} */ *ap = v;
if ((ap->a_access_type & VM_PROT_WRITE) != 0) {
LFS_SET_UINO(VTOI(ap->a_vp), IN_MODIFIED);
}
return genfs_compat_getpages(v);
}
int
lfs_putpages(void *v)
{
int error;
error = genfs_putpages(v);
return error;
}
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