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ffs_vnops.c
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ffs_vnops.c
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/* $NetBSD: ffs_vnops.c,v 1.16.2.6 1999/06/02 05:05:24 chs 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
*/
#if defined(_KERNEL) && !defined(_LKM)
#include "opt_uvm.h"
#include "opt_uvmhist.h"
#endif
#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/conf.h>
#include <sys/mount.h>
#include <sys/vnode.h>
#include <sys/malloc.h>
#include <sys/pool.h>
#include <sys/signalvar.h>
#include <vm/vm.h>
#if defined(UVM)
#include <uvm/uvm_extern.h>
#endif
#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_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_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 */
#ifdef UBC
{ &vop_getpages_desc, ffs_getpages }, /* getpages */
{ &vop_putpages_desc, ffs_putpages }, /* putpages */
#endif
{ NULL, 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_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_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 = 0;
int doclusterwrite = 0;
#include <ufs/ufs/ufs_readwrite.c>
/*
* 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;
register 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);
}
#ifdef UBC
#include <uvm/uvm.h>
int
ffs_getpages(v)
void *v;
{
struct vop_getpages_args /* {
struct vnode *a_vp;
vaddr_t a_offset;
vm_page_t *a_m;
int *a_count;
int a_centeridx;
vm_prot_t a_access_type;
int a_advice;
int a_flags;
} */ *ap = v;
int error, npages, cidx, i;
struct buf tmpbuf, *bp;
struct vnode *vp = ap->a_vp;
struct uvm_object *uobj = &vp->v_uvm.u_obj;
struct inode *ip = VTOI(vp);
struct fs *fs = ip->i_fs;
struct vm_page *pg, *pgs[16]; /* XXX 16 */
struct ucred *cred = curproc->p_ucred;
off_t offset;
UVMHIST_FUNC("ffs_getpages"); UVMHIST_CALLED(ubchist);
#ifdef DIAGNOSTIC
if (ap->a_centeridx < 0 || ap->a_centeridx > *ap->a_count) {
panic("ffs_getpages: centeridx %d out of range",
ap->a_centeridx);
}
#endif
if (ap->a_flags & PGO_LOCKED) {
uvn_findpages(uobj, ap->a_offset, ap->a_count, ap->a_m,
UFP_NOWAIT|UFP_NOALLOC|UFP_NORDONLY);
/* XXX PGO_ALLPAGES? */
return ap->a_m[ap->a_centeridx] == NULL ?
VM_PAGER_UNLOCK : VM_PAGER_OK;
}
/* vnode is VOP_LOCKed, uobj is locked */
/*
* XXX do the findpages for our 1 page first,
* change asyncget to take the one page as an arg and
* pretend that its findpages found it.
*/
/*
* kick off a big read first to get some readahead, then
* get the one page we wanted.
*/
if ((ap->a_flags & PGO_OVERWRITE) == 0 &&
(ap->a_offset & (MAXBSIZE - 1)) == 0) {
/*
* XXX pretty sure unlocking here is wrong.
*/
simple_unlock(&uobj->vmobjlock);
uvm_vnp_asyncget(vp, ap->a_offset, MAXBSIZE, fs->fs_bsize);
simple_lock(&uobj->vmobjlock);
}
/*
* the desired page isn't resident, we'll have to read it.
*/
offset = ap->a_offset + (ap->a_centeridx << PAGE_SHIFT);
npages = 1;
pg = NULL;
uvn_findpages(uobj, offset, &npages, &pg, 0);
simple_unlock(&uobj->vmobjlock);
/*
* if the page is already resident, just return it.
*/
if ((pg->flags & PG_FAKE) == 0 &&
!((ap->a_access_type & VM_PROT_WRITE) && (pg->flags & PG_RDONLY))) {
ap->a_m[ap->a_centeridx] = pg;
return VM_PAGER_OK;
}
UVMHIST_LOG(ubchist, "pg %p flags 0x%x access_type 0x%x",
pg, (int)pg->flags, (int)ap->a_access_type, 0);
/*
* ok, really read the desired page.
*/
bp = &tmpbuf;
bzero(bp, sizeof *bp);
bp->b_lblkno = lblkno(fs, offset);
error = VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL);
if (error) {
UVMHIST_LOG(ubchist, "VOP_BMAP lbn 0x%x -> %d\n",
bp->b_lblkno, error,0,0);
goto out;
}
if (bp->b_blkno == (daddr_t)-1) {
UVMHIST_LOG(ubchist, "lbn 0x%x -> HOLE", bp->b_lblkno,0,0,0);
/*
* for read faults, we can skip the block allocation
* by marking the page PG_RDONLY and PG_CLEAN.
*/
if ((ap->a_access_type & VM_PROT_WRITE) == 0) {
uvm_pagezero(pg);
pg->flags |= PG_CLEAN|PG_RDONLY;
UVMHIST_LOG(ubchist, "setting PG_RDONLY", 0,0,0,0);
goto out;
}
/*
* for write faults, we must now allocate the backing store
* and make sure the block is zeroed.
*/
error = ffs_balloc(ip, bp->b_lblkno,
blksize(fs, ip, bp->b_lblkno),
cred, NULL, &bp->b_blkno, 0);
if (error) {
UVMHIST_LOG(ubchist, "ffs_balloc lbn 0x%x -> %d",
bp->b_lblkno, error,0,0);
goto out;
}
simple_lock(&uobj->vmobjlock);
uvm_pager_dropcluster(uobj, NULL, &pg, &npages, 0, 0);
npages = fs->fs_bsize >> PAGE_SHIFT;
uvn_findpages(uobj, offset & ~((off_t)fs->fs_bsize - 1),
&npages, pgs, 0);
for (i = 0; i < npages; i++) {
uvm_pagezero(pgs[i]);
uvm_pageactivate(pgs[i]);
/*
* don't bother clearing mod/ref, the block is
* being modified anyways.
*/
pgs[i]->flags &= ~(PG_FAKE|PG_RDONLY);
}
cidx = (offset >> PAGE_SHIFT) - (pgs[0]->offset >> PAGE_SHIFT);
pg = pgs[cidx];
pgs[cidx] = NULL;
uvm_pager_dropcluster(uobj, NULL, pgs, &npages, 0, 0);
simple_unlock(&uobj->vmobjlock);
UVMHIST_LOG(ubchist, "cleared pages",0,0,0,0);
goto out;
}
/* adjust physical blkno for partial blocks */
bp->b_blkno += (offset - lblktosize(fs, bp->b_lblkno)) >> DEV_BSHIFT;
UVMHIST_LOG(ubchist, "vp %p bp %p lblkno 0x%x blkno 0x%x",
vp, bp, bp->b_lblkno, bp->b_blkno);
/*
* don't bother reading the pages if we're just going to
* overwrite them.
*/
if (ap->a_flags & PGO_OVERWRITE) {
UVMHIST_LOG(ubchist, "PGO_OVERWRITE",0,0,0,0);
/* XXX for now, zero the page */
if (pg->flags & PG_FAKE) {
uvm_pagezero(pg);
}
goto out;
}
bp->b_bufsize = PAGE_SIZE;
bp->b_data = (void *)uvm_pagermapin(&pg, 1, NULL, M_WAITOK);
bp->b_bcount = bp->b_lblkno < 0 ? bp->b_bufsize :
min(bp->b_bufsize, fragroundup(fs, vp->v_uvm.u_size - offset));
bp->b_vp = vp;
bp->b_flags = B_BUSY|B_READ;
VOP_STRATEGY(bp);
error = biowait(bp);
uvm_pagermapout((vaddr_t)bp->b_data, *ap->a_count);
out:
if (error) {
simple_lock(&uobj->vmobjlock);
if (pg->flags & PG_WANTED) {
wakeup(pg);
}
UVM_PAGE_OWN(pg, NULL);
uvm_lock_pageq();
uvm_pagefree(pg);
uvm_unlock_pageq();
simple_unlock(&uobj->vmobjlock);
} else {
pg->flags &= ~(PG_FAKE);
pmap_clear_modify(PMAP_PGARG(pg));
pmap_clear_reference(PMAP_PGARG(pg));
uvm_pageactivate(pg);
ap->a_m[ap->a_centeridx] = pg;
}
UVMHIST_LOG(ubchist, "returning, error %d", error,0,0,0);
return error ? VM_PAGER_ERROR : VM_PAGER_OK;
}
/*
* Vnode op for VM putpages.
*/
int
ffs_putpages(v)
void *v;
{
struct vop_putpages_args /* {
struct vnode *a_vp;
struct vm_page **a_m;
int a_count;
int a_sync;
int *a_rtvals;
} */ *ap = v;
int s, error;
int bsize;
vaddr_t kva, offset;
struct vm_page *pg;
struct buf tmpbuf, *bp;
struct vnode *vp = ap->a_vp;
struct inode *ip = VTOI(vp);
struct fs *fs = ip->i_fs;
UVMHIST_FUNC("ffs_putpages"); UVMHIST_CALLED(ubchist);
pg = ap->a_m[0];
#ifdef DEBUG
/* XXX verify that pages given are in fact physically contiguous. */
#endif
kva = uvm_pagermapin(ap->a_m, ap->a_count, NULL, M_WAITOK);
if (kva == 0) {
return VM_PAGER_AGAIN;
}
if (ap->a_sync) {
bp = &tmpbuf;
bzero(bp, sizeof *bp);
}
else {
struct uvm_aiobuf *abp = pool_get(uvm_aiobuf_pool, PR_WAITOK);
abp->aio.aiodone = uvm_aio_aiodone;
abp->aio.kva = kva;
abp->aio.npages = ap->a_count;
abp->aio.pd_ptr = abp;
/* XXX pagedaemon */
abp->aio.flags = (curproc == uvm.pagedaemon_proc) ?
UVM_AIO_PAGEDAEMON : 0;
bp = &abp->buf;
bzero(bp, sizeof *bp);
bp->b_flags = B_CALL|B_ASYNC;
bp->b_iodone = uvm_aio_biodone;
}
offset = pg->offset;
bp->b_bufsize = ap->a_count << PAGE_SHIFT;
bp->b_data = (void *)kva;
bp->b_lblkno = lblkno(fs, offset);
bp->b_bcount = min(bp->b_bufsize,
fragroundup(fs, vp->v_uvm.u_size - offset));
bp->b_flags |= B_BUSY|B_WRITE;
bp->b_vp = vp;
bsize = blksize(fs, ip, bp->b_lblkno);
error = VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL);
if (error) {
UVMHIST_LOG(ubchist, "ffs_balloc -> %d", error, 0,0,0);
goto out;
}
/* this could be ifdef DIAGNOSTIC, but it's really important */
if (bp->b_blkno == (daddr_t)-1) {
panic("ffs_putpages: no backing store vp %p lbn 0x%x",
vp, bp->b_lblkno);
}
/* adjust physical blkno for partial blocks */
bp->b_blkno += (offset - lblktosize(fs, bp->b_lblkno)) >> DEV_BSHIFT;
UVMHIST_LOG(ubchist, "pg %p vp %p lblkno 0x%x blkno 0x%x",
pg, vp, bp->b_lblkno, bp->b_blkno);
s = splbio();
vp->v_numoutput++;
splx(s);
VOP_STRATEGY(bp);
if (!ap->a_sync) {
return VM_PAGER_PEND;
}
error = biowait(bp);
out:
uvm_pagermapout(kva, ap->a_count);
UVMHIST_LOG(ubchist, "returning, error %d", error,0,0,0);
return error ? VM_PAGER_ERROR : VM_PAGER_OK;
}
#endif