803 lines
22 KiB
C
803 lines
22 KiB
C
/* $NetBSD: ffs_vnops.c,v 1.96 2008/01/09 16:15:23 ad Exp $ */
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/*
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ffs_vnops.c,v 1.96 2008/01/09 16:15:23 ad Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/resourcevar.h>
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#include <sys/kernel.h>
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#include <sys/file.h>
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#include <sys/stat.h>
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#include <sys/buf.h>
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#include <sys/event.h>
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#include <sys/proc.h>
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#include <sys/mount.h>
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#include <sys/vnode.h>
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#include <sys/pool.h>
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#include <sys/signalvar.h>
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#include <sys/kauth.h>
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#include <sys/fstrans.h>
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#include <miscfs/fifofs/fifo.h>
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#include <miscfs/genfs/genfs.h>
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#include <miscfs/specfs/specdev.h>
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#include <ufs/ufs/inode.h>
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#include <ufs/ufs/dir.h>
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#include <ufs/ufs/ufs_extern.h>
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#include <ufs/ufs/ufsmount.h>
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#include <ufs/ffs/fs.h>
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#include <ufs/ffs/ffs_extern.h>
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#include <uvm/uvm.h>
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/* Global vfs data structures for ufs. */
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int (**ffs_vnodeop_p)(void *);
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const struct vnodeopv_entry_desc ffs_vnodeop_entries[] = {
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{ &vop_default_desc, vn_default_error },
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{ &vop_lookup_desc, ufs_lookup }, /* lookup */
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{ &vop_create_desc, ufs_create }, /* create */
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{ &vop_whiteout_desc, ufs_whiteout }, /* whiteout */
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{ &vop_mknod_desc, ufs_mknod }, /* mknod */
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{ &vop_open_desc, ufs_open }, /* open */
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{ &vop_close_desc, ufs_close }, /* close */
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{ &vop_access_desc, ufs_access }, /* access */
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{ &vop_getattr_desc, ufs_getattr }, /* getattr */
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{ &vop_setattr_desc, ufs_setattr }, /* setattr */
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{ &vop_read_desc, ffs_read }, /* read */
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{ &vop_write_desc, ffs_write }, /* write */
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{ &vop_lease_desc, ufs_lease_check }, /* lease */
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{ &vop_ioctl_desc, ufs_ioctl }, /* ioctl */
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{ &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
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{ &vop_poll_desc, ufs_poll }, /* poll */
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{ &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */
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{ &vop_revoke_desc, ufs_revoke }, /* revoke */
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{ &vop_mmap_desc, ufs_mmap }, /* mmap */
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{ &vop_fsync_desc, ffs_fsync }, /* fsync */
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{ &vop_seek_desc, ufs_seek }, /* seek */
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{ &vop_remove_desc, ufs_remove }, /* remove */
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{ &vop_link_desc, ufs_link }, /* link */
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{ &vop_rename_desc, ufs_rename }, /* rename */
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{ &vop_mkdir_desc, ufs_mkdir }, /* mkdir */
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{ &vop_rmdir_desc, ufs_rmdir }, /* rmdir */
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{ &vop_symlink_desc, ufs_symlink }, /* symlink */
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{ &vop_readdir_desc, ufs_readdir }, /* readdir */
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{ &vop_readlink_desc, ufs_readlink }, /* readlink */
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{ &vop_abortop_desc, ufs_abortop }, /* abortop */
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{ &vop_inactive_desc, ufs_inactive }, /* inactive */
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{ &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
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{ &vop_lock_desc, ffs_lock }, /* lock */
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{ &vop_unlock_desc, ffs_unlock }, /* unlock */
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{ &vop_bmap_desc, ufs_bmap }, /* bmap */
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{ &vop_strategy_desc, ufs_strategy }, /* strategy */
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{ &vop_print_desc, ufs_print }, /* print */
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{ &vop_islocked_desc, ffs_islocked }, /* islocked */
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{ &vop_pathconf_desc, ufs_pathconf }, /* pathconf */
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{ &vop_advlock_desc, ufs_advlock }, /* advlock */
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{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
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{ &vop_getpages_desc, genfs_getpages }, /* getpages */
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{ &vop_putpages_desc, genfs_putpages }, /* putpages */
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{ &vop_openextattr_desc, ffs_openextattr }, /* openextattr */
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{ &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */
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{ &vop_getextattr_desc, ffs_getextattr }, /* getextattr */
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{ &vop_setextattr_desc, ffs_setextattr }, /* setextattr */
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{ &vop_listextattr_desc, ffs_listextattr }, /* listextattr */
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{ &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */
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{ NULL, NULL }
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};
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const struct vnodeopv_desc ffs_vnodeop_opv_desc =
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{ &ffs_vnodeop_p, ffs_vnodeop_entries };
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int (**ffs_specop_p)(void *);
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const struct vnodeopv_entry_desc ffs_specop_entries[] = {
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{ &vop_default_desc, vn_default_error },
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{ &vop_lookup_desc, spec_lookup }, /* lookup */
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{ &vop_create_desc, spec_create }, /* create */
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{ &vop_mknod_desc, spec_mknod }, /* mknod */
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{ &vop_open_desc, spec_open }, /* open */
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{ &vop_close_desc, ufsspec_close }, /* close */
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{ &vop_access_desc, ufs_access }, /* access */
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{ &vop_getattr_desc, ufs_getattr }, /* getattr */
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{ &vop_setattr_desc, ufs_setattr }, /* setattr */
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{ &vop_read_desc, ufsspec_read }, /* read */
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{ &vop_write_desc, ufsspec_write }, /* write */
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{ &vop_lease_desc, spec_lease_check }, /* lease */
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{ &vop_ioctl_desc, spec_ioctl }, /* ioctl */
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{ &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
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{ &vop_poll_desc, spec_poll }, /* poll */
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{ &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */
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{ &vop_revoke_desc, spec_revoke }, /* revoke */
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{ &vop_mmap_desc, spec_mmap }, /* mmap */
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{ &vop_fsync_desc, ffs_fsync }, /* fsync */
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{ &vop_seek_desc, spec_seek }, /* seek */
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{ &vop_remove_desc, spec_remove }, /* remove */
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{ &vop_link_desc, spec_link }, /* link */
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{ &vop_rename_desc, spec_rename }, /* rename */
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{ &vop_mkdir_desc, spec_mkdir }, /* mkdir */
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{ &vop_rmdir_desc, spec_rmdir }, /* rmdir */
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{ &vop_symlink_desc, spec_symlink }, /* symlink */
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{ &vop_readdir_desc, spec_readdir }, /* readdir */
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{ &vop_readlink_desc, spec_readlink }, /* readlink */
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{ &vop_abortop_desc, spec_abortop }, /* abortop */
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{ &vop_inactive_desc, ufs_inactive }, /* inactive */
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{ &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
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{ &vop_lock_desc, ffs_lock }, /* lock */
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{ &vop_unlock_desc, ffs_unlock }, /* unlock */
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{ &vop_bmap_desc, spec_bmap }, /* bmap */
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{ &vop_strategy_desc, spec_strategy }, /* strategy */
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{ &vop_print_desc, ufs_print }, /* print */
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{ &vop_islocked_desc, ffs_islocked }, /* islocked */
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{ &vop_pathconf_desc, spec_pathconf }, /* pathconf */
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{ &vop_advlock_desc, spec_advlock }, /* advlock */
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{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
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{ &vop_getpages_desc, spec_getpages }, /* getpages */
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{ &vop_putpages_desc, spec_putpages }, /* putpages */
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{ &vop_openextattr_desc, ffs_openextattr }, /* openextattr */
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{ &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */
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{ &vop_getextattr_desc, ffs_getextattr }, /* getextattr */
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{ &vop_setextattr_desc, ffs_setextattr }, /* setextattr */
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{ &vop_listextattr_desc, ffs_listextattr }, /* listextattr */
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{ &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */
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{ NULL, NULL }
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};
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const struct vnodeopv_desc ffs_specop_opv_desc =
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{ &ffs_specop_p, ffs_specop_entries };
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int (**ffs_fifoop_p)(void *);
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const struct vnodeopv_entry_desc ffs_fifoop_entries[] = {
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{ &vop_default_desc, vn_default_error },
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{ &vop_lookup_desc, fifo_lookup }, /* lookup */
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{ &vop_create_desc, fifo_create }, /* create */
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{ &vop_mknod_desc, fifo_mknod }, /* mknod */
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{ &vop_open_desc, fifo_open }, /* open */
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{ &vop_close_desc, ufsfifo_close }, /* close */
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{ &vop_access_desc, ufs_access }, /* access */
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{ &vop_getattr_desc, ufs_getattr }, /* getattr */
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{ &vop_setattr_desc, ufs_setattr }, /* setattr */
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{ &vop_read_desc, ufsfifo_read }, /* read */
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{ &vop_write_desc, ufsfifo_write }, /* write */
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{ &vop_lease_desc, fifo_lease_check }, /* lease */
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{ &vop_ioctl_desc, fifo_ioctl }, /* ioctl */
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{ &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
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{ &vop_poll_desc, fifo_poll }, /* poll */
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{ &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */
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{ &vop_revoke_desc, fifo_revoke }, /* revoke */
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{ &vop_mmap_desc, fifo_mmap }, /* mmap */
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{ &vop_fsync_desc, ffs_fsync }, /* fsync */
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{ &vop_seek_desc, fifo_seek }, /* seek */
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{ &vop_remove_desc, fifo_remove }, /* remove */
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{ &vop_link_desc, fifo_link }, /* link */
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{ &vop_rename_desc, fifo_rename }, /* rename */
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{ &vop_mkdir_desc, fifo_mkdir }, /* mkdir */
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{ &vop_rmdir_desc, fifo_rmdir }, /* rmdir */
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{ &vop_symlink_desc, fifo_symlink }, /* symlink */
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{ &vop_readdir_desc, fifo_readdir }, /* readdir */
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{ &vop_readlink_desc, fifo_readlink }, /* readlink */
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{ &vop_abortop_desc, fifo_abortop }, /* abortop */
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{ &vop_inactive_desc, ufs_inactive }, /* inactive */
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{ &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
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{ &vop_lock_desc, ffs_lock }, /* lock */
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{ &vop_unlock_desc, ffs_unlock }, /* unlock */
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{ &vop_bmap_desc, fifo_bmap }, /* bmap */
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{ &vop_strategy_desc, fifo_strategy }, /* strategy */
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{ &vop_print_desc, ufs_print }, /* print */
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{ &vop_islocked_desc, ffs_islocked }, /* islocked */
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{ &vop_pathconf_desc, fifo_pathconf }, /* pathconf */
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{ &vop_advlock_desc, fifo_advlock }, /* advlock */
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{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
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{ &vop_putpages_desc, fifo_putpages }, /* putpages */
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{ &vop_openextattr_desc, ffs_openextattr }, /* openextattr */
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{ &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */
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{ &vop_getextattr_desc, ffs_getextattr }, /* getextattr */
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{ &vop_setextattr_desc, ffs_setextattr }, /* setextattr */
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{ &vop_listextattr_desc, ffs_listextattr }, /* listextattr */
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{ &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */
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{ NULL, NULL }
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};
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const struct vnodeopv_desc ffs_fifoop_opv_desc =
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{ &ffs_fifoop_p, ffs_fifoop_entries };
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#include <ufs/ufs/ufs_readwrite.c>
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int
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ffs_fsync(void *v)
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{
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struct vop_fsync_args /* {
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struct vnode *a_vp;
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kauth_cred_t a_cred;
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int a_flags;
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off_t a_offlo;
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off_t a_offhi;
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struct lwp *a_l;
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} */ *ap = v;
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struct buf *bp;
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int num, error, i;
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struct indir ia[NIADDR + 1];
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int bsize;
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daddr_t blk_high;
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struct vnode *vp;
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vp = ap->a_vp;
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fstrans_start(vp->v_mount, FSTRANS_LAZY);
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/*
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* XXX no easy way to sync a range in a file with softdep.
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*/
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if ((ap->a_offlo == 0 && ap->a_offhi == 0) || DOINGSOFTDEP(vp) ||
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(vp->v_type != VREG)) {
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error = ffs_full_fsync(vp, ap->a_flags);
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goto out;
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}
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bsize = vp->v_mount->mnt_stat.f_iosize;
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blk_high = ap->a_offhi / bsize;
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if (ap->a_offhi % bsize != 0)
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blk_high++;
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/*
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* First, flush all pages in range.
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*/
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mutex_enter(&vp->v_interlock);
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error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo),
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round_page(ap->a_offhi), PGO_CLEANIT |
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((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0));
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if (error) {
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goto out;
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}
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/*
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* Then, flush indirect blocks.
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*/
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if (blk_high >= NDADDR) {
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error = ufs_getlbns(vp, blk_high, ia, &num);
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if (error)
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goto out;
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mutex_enter(&bufcache_lock);
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for (i = 0; i < num; i++) {
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if ((bp = incore(vp, ia[i].in_lbn)) == NULL)
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continue;
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if ((bp->b_cflags & BC_BUSY) != 0 ||
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(bp->b_oflags & BO_DELWRI) == 0)
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continue;
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bp->b_cflags |= BC_BUSY | BC_VFLUSH;
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mutex_exit(&bufcache_lock);
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bawrite(bp);
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mutex_enter(&bufcache_lock);
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}
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mutex_exit(&bufcache_lock);
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}
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if (ap->a_flags & FSYNC_WAIT) {
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mutex_enter(&vp->v_interlock);
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while (vp->v_numoutput > 0)
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cv_wait(&vp->v_cv, &vp->v_interlock);
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mutex_exit(&vp->v_interlock);
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}
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error = ffs_update(vp, NULL, NULL,
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((ap->a_flags & (FSYNC_WAIT | FSYNC_DATAONLY)) == FSYNC_WAIT)
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? UPDATE_WAIT : 0);
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if (error == 0 && ap->a_flags & FSYNC_CACHE) {
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int l = 0;
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VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &l, FWRITE,
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curlwp->l_cred);
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}
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out:
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fstrans_done(vp->v_mount);
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return error;
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}
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/*
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* Synch an open file.
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*/
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/* ARGSUSED */
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int
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ffs_full_fsync(struct vnode *vp, int flags)
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{
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struct buf *bp, *nbp;
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int error, passes, skipmeta, inodedeps_only, waitfor;
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if (vp->v_type == VBLK &&
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vp->v_specmountpoint != NULL &&
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(vp->v_specmountpoint->mnt_flag & MNT_SOFTDEP))
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softdep_fsync_mountdev(vp);
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mutex_enter(&vp->v_interlock);
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inodedeps_only = DOINGSOFTDEP(vp) && (flags & FSYNC_RECLAIM)
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&& UVM_OBJ_IS_CLEAN(&vp->v_uobj) && LIST_EMPTY(&vp->v_dirtyblkhd);
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/*
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* Flush all dirty data associated with a vnode.
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*/
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if (vp->v_type == VREG || vp->v_type == VBLK) {
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error = VOP_PUTPAGES(vp, 0, 0, PGO_ALLPAGES | PGO_CLEANIT |
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((flags & FSYNC_WAIT) ? PGO_SYNCIO : 0) |
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(fstrans_getstate(vp->v_mount) == FSTRANS_SUSPENDING ?
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PGO_FREE : 0));
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if (error) {
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return error;
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}
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} else
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mutex_exit(&vp->v_interlock);
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passes = NIADDR + 1;
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skipmeta = 0;
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if (flags & FSYNC_WAIT)
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skipmeta = 1;
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loop:
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mutex_enter(&bufcache_lock);
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LIST_FOREACH(bp, &vp->v_dirtyblkhd, b_vnbufs) {
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bp->b_cflags &= ~BC_SCANNED;
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}
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for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) {
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nbp = LIST_NEXT(bp, b_vnbufs);
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if (bp->b_cflags & (BC_BUSY | BC_SCANNED))
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continue;
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if ((bp->b_oflags & BO_DELWRI) == 0)
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panic("ffs_fsync: not dirty");
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if (skipmeta && bp->b_lblkno < 0)
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continue;
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bp->b_cflags |= BC_BUSY | BC_VFLUSH | BC_SCANNED;
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mutex_exit(&bufcache_lock);
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/*
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* On our final pass through, do all I/O synchronously
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* so that we can find out if our flush is failing
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* because of write errors.
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*/
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if (passes > 0 || !(flags & FSYNC_WAIT))
|
|
(void) bawrite(bp);
|
|
else if ((error = bwrite(bp)) != 0)
|
|
return (error);
|
|
/*
|
|
* Since we unlocked during the I/O, we need
|
|
* to start from a known point.
|
|
*/
|
|
mutex_enter(&bufcache_lock);
|
|
nbp = LIST_FIRST(&vp->v_dirtyblkhd);
|
|
}
|
|
mutex_exit(&bufcache_lock);
|
|
if (skipmeta) {
|
|
skipmeta = 0;
|
|
goto loop;
|
|
}
|
|
|
|
if (flags & FSYNC_WAIT) {
|
|
mutex_enter(&vp->v_interlock);
|
|
while (vp->v_numoutput) {
|
|
cv_wait(&vp->v_cv, &vp->v_interlock);
|
|
}
|
|
mutex_exit(&vp->v_interlock);
|
|
|
|
/*
|
|
* Ensure that any filesystem metadata associated
|
|
* with the vnode has been written.
|
|
*/
|
|
if ((error = softdep_sync_metadata(vp)) != 0)
|
|
return (error);
|
|
|
|
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
|
|
}
|
|
}
|
|
|
|
if (inodedeps_only)
|
|
waitfor = 0;
|
|
else
|
|
waitfor = (flags & FSYNC_WAIT) ? UPDATE_WAIT : 0;
|
|
error = ffs_update(vp, NULL, NULL, waitfor);
|
|
|
|
if (error == 0 && flags & FSYNC_CACHE) {
|
|
int i = 0;
|
|
VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &i, FWRITE,
|
|
curlwp->l_cred);
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Reclaim an inode so that it can be used for other purposes.
|
|
*/
|
|
int
|
|
ffs_reclaim(void *v)
|
|
{
|
|
struct vop_reclaim_args /* {
|
|
struct vnode *a_vp;
|
|
struct lwp *a_l;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct inode *ip = VTOI(vp);
|
|
struct mount *mp = vp->v_mount;
|
|
struct ufsmount *ump = ip->i_ump;
|
|
void *data;
|
|
int error;
|
|
|
|
fstrans_start(mp, FSTRANS_LAZY);
|
|
if ((error = ufs_reclaim(vp)) != 0) {
|
|
fstrans_done(mp);
|
|
return (error);
|
|
}
|
|
if (ip->i_din.ffs1_din != NULL) {
|
|
if (ump->um_fstype == UFS1)
|
|
pool_cache_put(ffs_dinode1_cache, ip->i_din.ffs1_din);
|
|
else
|
|
pool_cache_put(ffs_dinode2_cache, ip->i_din.ffs2_din);
|
|
}
|
|
/*
|
|
* To interlock with ffs_sync().
|
|
*/
|
|
genfs_node_destroy(vp);
|
|
mutex_enter(&vp->v_interlock);
|
|
data = vp->v_data;
|
|
vp->v_data = NULL;
|
|
mutex_exit(&vp->v_interlock);
|
|
|
|
/*
|
|
* XXX MFS ends up here, too, to free an inode. Should we create
|
|
* XXX a separate pool for MFS inodes?
|
|
*/
|
|
pool_cache_put(ffs_inode_cache, data);
|
|
fstrans_done(mp);
|
|
return (0);
|
|
}
|
|
|
|
#if 0
|
|
int
|
|
ffs_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;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct inode *ip = VTOI(vp);
|
|
struct fs *fs = ip->i_fs;
|
|
|
|
/*
|
|
* don't allow a softdep write to create pages for only part of a block.
|
|
* the dependency tracking requires that all pages be in memory for
|
|
* a block involved in a dependency.
|
|
*/
|
|
|
|
if (ap->a_flags & PGO_OVERWRITE &&
|
|
(blkoff(fs, ap->a_offset) != 0 ||
|
|
blkoff(fs, *ap->a_count << PAGE_SHIFT) != 0) &&
|
|
DOINGSOFTDEP(ap->a_vp)) {
|
|
if ((ap->a_flags & PGO_LOCKED) == 0) {
|
|
mutex_exit(&vp->v_interlock);
|
|
}
|
|
return EINVAL;
|
|
}
|
|
return genfs_getpages(v);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Return the last logical file offset that should be written for this file
|
|
* if we're doing a write that ends at "size".
|
|
*/
|
|
|
|
void
|
|
ffs_gop_size(struct vnode *vp, off_t size, off_t *eobp, int flags)
|
|
{
|
|
struct inode *ip = VTOI(vp);
|
|
struct fs *fs = ip->i_fs;
|
|
daddr_t olbn, nlbn;
|
|
|
|
olbn = lblkno(fs, ip->i_size);
|
|
nlbn = lblkno(fs, size);
|
|
if (nlbn < NDADDR && olbn <= nlbn) {
|
|
*eobp = fragroundup(fs, size);
|
|
} else {
|
|
*eobp = blkroundup(fs, size);
|
|
}
|
|
}
|
|
|
|
int
|
|
ffs_openextattr(void *v)
|
|
{
|
|
struct vop_openextattr_args /* {
|
|
struct vnode *a_vp;
|
|
kauth_cred_t a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct inode *ip = VTOI(ap->a_vp);
|
|
struct fs *fs = ip->i_fs;
|
|
|
|
/* Not supported for UFS1 file systems. */
|
|
if (fs->fs_magic == FS_UFS1_MAGIC)
|
|
return (EOPNOTSUPP);
|
|
|
|
/* XXX Not implemented for UFS2 file systems. */
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
int
|
|
ffs_closeextattr(void *v)
|
|
{
|
|
struct vop_closeextattr_args /* {
|
|
struct vnode *a_vp;
|
|
int a_commit;
|
|
kauth_cred_t a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct inode *ip = VTOI(ap->a_vp);
|
|
struct fs *fs = ip->i_fs;
|
|
|
|
/* Not supported for UFS1 file systems. */
|
|
if (fs->fs_magic == FS_UFS1_MAGIC)
|
|
return (EOPNOTSUPP);
|
|
|
|
/* XXX Not implemented for UFS2 file systems. */
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
int
|
|
ffs_getextattr(void *v)
|
|
{
|
|
struct vop_getextattr_args /* {
|
|
struct vnode *a_vp;
|
|
int a_attrnamespace;
|
|
const char *a_name;
|
|
struct uio *a_uio;
|
|
size_t *a_size;
|
|
kauth_cred_t a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct inode *ip = VTOI(vp);
|
|
struct fs *fs = ip->i_fs;
|
|
|
|
if (fs->fs_magic == FS_UFS1_MAGIC) {
|
|
#ifdef UFS_EXTATTR
|
|
int error;
|
|
|
|
fstrans_start(vp->v_mount, FSTRANS_SHARED);
|
|
error = ufs_getextattr(ap);
|
|
fstrans_done(vp->v_mount);
|
|
return error;
|
|
#else
|
|
return (EOPNOTSUPP);
|
|
#endif
|
|
}
|
|
|
|
/* XXX Not implemented for UFS2 file systems. */
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
int
|
|
ffs_setextattr(void *v)
|
|
{
|
|
struct vop_setextattr_args /* {
|
|
struct vnode *a_vp;
|
|
int a_attrnamespace;
|
|
const char *a_name;
|
|
struct uio *a_uio;
|
|
kauth_cred_t a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct inode *ip = VTOI(vp);
|
|
struct fs *fs = ip->i_fs;
|
|
|
|
if (fs->fs_magic == FS_UFS1_MAGIC) {
|
|
#ifdef UFS_EXTATTR
|
|
int error;
|
|
|
|
fstrans_start(vp->v_mount, FSTRANS_SHARED);
|
|
error = ufs_setextattr(ap);
|
|
fstrans_done(vp->v_mount);
|
|
return error;
|
|
#else
|
|
return (EOPNOTSUPP);
|
|
#endif
|
|
}
|
|
|
|
/* XXX Not implemented for UFS2 file systems. */
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
int
|
|
ffs_listextattr(void *v)
|
|
{
|
|
struct vop_listextattr_args /* {
|
|
struct vnode *a_vp;
|
|
int a_attrnamespace;
|
|
struct uio *a_uio;
|
|
size_t *a_size;
|
|
kauth_cred_t a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct inode *ip = VTOI(ap->a_vp);
|
|
struct fs *fs = ip->i_fs;
|
|
|
|
/* Not supported for UFS1 file systems. */
|
|
if (fs->fs_magic == FS_UFS1_MAGIC)
|
|
return (EOPNOTSUPP);
|
|
|
|
/* XXX Not implemented for UFS2 file systems. */
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
int
|
|
ffs_deleteextattr(void *v)
|
|
{
|
|
struct vop_deleteextattr_args /* {
|
|
struct vnode *a_vp;
|
|
int a_attrnamespace;
|
|
kauth_cred_t a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct inode *ip = VTOI(vp);
|
|
struct fs *fs = ip->i_fs;
|
|
|
|
if (fs->fs_magic == FS_UFS1_MAGIC) {
|
|
#ifdef UFS_EXTATTR
|
|
int error;
|
|
|
|
fstrans_start(vp->v_mount, FSTRANS_SHARED);
|
|
error = ufs_deleteextattr(ap);
|
|
fstrans_done(vp->v_mount);
|
|
return error;
|
|
#else
|
|
return (EOPNOTSUPP);
|
|
#endif
|
|
}
|
|
|
|
/* XXX Not implemented for UFS2 file systems. */
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
/*
|
|
* Lock the node.
|
|
*/
|
|
int
|
|
ffs_lock(void *v)
|
|
{
|
|
struct vop_lock_args /* {
|
|
struct vnode *a_vp;
|
|
int a_flags;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct mount *mp = vp->v_mount;
|
|
struct lock *lkp;
|
|
int flags = ap->a_flags;
|
|
int result;
|
|
|
|
/*
|
|
* Fake lock during file system suspension.
|
|
*/
|
|
if ((vp->v_type == VREG || vp->v_type == VDIR) &&
|
|
fstrans_is_owner(mp) &&
|
|
fstrans_getstate(mp) == FSTRANS_SUSPENDING) {
|
|
if ((flags & LK_INTERLOCK) != 0)
|
|
mutex_exit(&vp->v_interlock);
|
|
return 0;
|
|
}
|
|
|
|
KASSERT((flags & ~(LK_SHARED | LK_EXCLUSIVE | LK_SLEEPFAIL |
|
|
LK_INTERLOCK | LK_NOWAIT | LK_CANRECURSE)) == 0);
|
|
for (;;) {
|
|
if ((flags & LK_INTERLOCK) == 0) {
|
|
mutex_enter(&vp->v_interlock);
|
|
flags |= LK_INTERLOCK;
|
|
}
|
|
lkp = vp->v_vnlock;
|
|
result = lockmgr(lkp, flags, &vp->v_interlock);
|
|
if (lkp == vp->v_vnlock || result != 0)
|
|
return result;
|
|
/*
|
|
* Apparent success, except that the vnode mutated between
|
|
* snapshot file vnode and regular file vnode while this
|
|
* thread slept. The lock currently held is not the right
|
|
* lock. Release it, and try to get the new lock.
|
|
*/
|
|
(void) lockmgr(lkp, LK_RELEASE, NULL);
|
|
flags &= ~LK_INTERLOCK;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Unlock the node.
|
|
*/
|
|
int
|
|
ffs_unlock(void *v)
|
|
{
|
|
struct vop_unlock_args /* {
|
|
struct vnode *a_vp;
|
|
int a_flags;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct mount *mp = vp->v_mount;
|
|
|
|
/*
|
|
* Fake unlock during file system suspension.
|
|
*/
|
|
if ((vp->v_type == VREG || vp->v_type == VDIR) &&
|
|
fstrans_is_owner(mp) &&
|
|
fstrans_getstate(mp) == FSTRANS_SUSPENDING) {
|
|
if ((ap->a_flags & LK_INTERLOCK) != 0)
|
|
mutex_exit(&vp->v_interlock);
|
|
return 0;
|
|
}
|
|
return (lockmgr(vp->v_vnlock, ap->a_flags | LK_RELEASE,
|
|
&vp->v_interlock));
|
|
}
|
|
|
|
/*
|
|
* Return whether or not the node is locked.
|
|
*/
|
|
int
|
|
ffs_islocked(void *v)
|
|
{
|
|
struct vop_islocked_args /* {
|
|
struct vnode *a_vp;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
return (lockstatus(vp->v_vnlock));
|
|
}
|