528 lines
16 KiB
C
528 lines
16 KiB
C
/* $NetBSD: lfs_vnops.c,v 1.15 1998/03/01 02:23:25 fvdl Exp $ */
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/*
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* Copyright (c) 1986, 1989, 1991, 1993, 1995
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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* @(#)lfs_vnops.c 8.13 (Berkeley) 6/10/95
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/namei.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/proc.h>
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#include <sys/conf.h>
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#include <sys/mount.h>
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#include <sys/vnode.h>
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#include <sys/malloc.h>
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#include <sys/signalvar.h>
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#include <vm/vm.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/quota.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/ufsmount.h>
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#include <ufs/ufs/ufs_extern.h>
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#include <ufs/lfs/lfs.h>
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#include <ufs/lfs/lfs_extern.h>
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/* Global vfs data structures for lfs. */
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int (**lfs_vnodeop_p) __P((void *));
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struct vnodeopv_entry_desc lfs_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, lfs_close }, /* close */
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{ &vop_access_desc, ufs_access }, /* access */
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{ &vop_getattr_desc, lfs_getattr }, /* getattr */
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{ &vop_setattr_desc, ufs_setattr }, /* setattr */
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{ &vop_read_desc, lfs_read }, /* read */
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{ &vop_write_desc, lfs_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_poll_desc, ufs_poll }, /* poll */
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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, lfs_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, lfs_reclaim }, /* reclaim */
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{ &vop_lock_desc, ufs_lock }, /* lock */
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{ &vop_unlock_desc, ufs_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, ufs_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_blkatoff_desc, lfs_blkatoff }, /* blkatoff */
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{ &vop_valloc_desc, lfs_valloc }, /* valloc */
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{ &vop_vfree_desc, lfs_vfree }, /* vfree */
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{ &vop_truncate_desc, lfs_truncate }, /* truncate */
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{ &vop_update_desc, lfs_update }, /* update */
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{ &vop_bwrite_desc, lfs_bwrite }, /* bwrite */
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{ (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL }
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};
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struct vnodeopv_desc lfs_vnodeop_opv_desc =
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{ &lfs_vnodeop_p, lfs_vnodeop_entries };
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int (**lfs_specop_p) __P((void *));
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struct vnodeopv_entry_desc lfs_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, lfs_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_poll_desc, spec_poll }, /* poll */
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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, spec_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, lfs_reclaim }, /* reclaim */
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{ &vop_lock_desc, ufs_lock }, /* lock */
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{ &vop_unlock_desc, ufs_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, ufs_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_blkatoff_desc, spec_blkatoff }, /* blkatoff */
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{ &vop_valloc_desc, spec_valloc }, /* valloc */
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{ &vop_vfree_desc, lfs_vfree }, /* vfree */
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{ &vop_truncate_desc, spec_truncate }, /* truncate */
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{ &vop_update_desc, lfs_update }, /* update */
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{ &vop_bwrite_desc, lfs_bwrite }, /* bwrite */
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{ (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL }
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};
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struct vnodeopv_desc lfs_specop_opv_desc =
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{ &lfs_specop_p, lfs_specop_entries };
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#ifdef FIFO
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int (**lfs_fifoop_p) __P((void *));
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struct vnodeopv_entry_desc lfs_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, lfs_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_poll_desc, fifo_poll }, /* poll */
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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, fifo_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, lfs_reclaim }, /* reclaim */
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{ &vop_lock_desc, ufs_lock }, /* lock */
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{ &vop_unlock_desc, ufs_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, ufs_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_blkatoff_desc, fifo_blkatoff }, /* blkatoff */
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{ &vop_valloc_desc, fifo_valloc }, /* valloc */
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{ &vop_vfree_desc, lfs_vfree }, /* vfree */
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{ &vop_truncate_desc, fifo_truncate }, /* truncate */
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{ &vop_update_desc, lfs_update }, /* update */
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{ &vop_bwrite_desc, lfs_bwrite }, /* bwrite */
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{ (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL }
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};
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struct vnodeopv_desc lfs_fifoop_opv_desc =
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{ &lfs_fifoop_p, lfs_fifoop_entries };
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#endif /* FIFO */
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#define LFS_READWRITE
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#include <ufs/ufs/ufs_readwrite.c>
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#undef LFS_READWRITE
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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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lfs_fsync(v)
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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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struct ucred *a_cred;
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int a_waitfor;
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struct proc *a_p;
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} */ *ap = v;
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struct timespec ts;
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TIMEVAL_TO_TIMESPEC(&time, &ts);
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return (VOP_UPDATE(ap->a_vp, &ts, &ts,
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ap->a_waitfor == MNT_WAIT ? LFS_SYNC : 0));
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}
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/*
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* These macros are used to bracket UFS directory ops, so that we can
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* identify all the pages touched during directory ops which need to
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* be ordered and flushed atomically, so that they may be recovered.
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*/
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#define SET_DIROP(fs) { \
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if ((fs)->lfs_writer) \
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tsleep(&(fs)->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); \
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++(fs)->lfs_dirops; \
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(fs)->lfs_doifile = 1; \
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}
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#define SET_ENDOP(fs) { \
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--(fs)->lfs_dirops; \
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if (!(fs)->lfs_dirops) \
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wakeup(&(fs)->lfs_writer); \
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}
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#define MARK_VNODE(dvp) (dvp)->v_flag |= VDIROP
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/*
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* XXXX most of these aren't used? - fvdl 02/98
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*/
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int
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lfs_symlink(v)
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void *v;
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{
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struct vop_symlink_args /* {
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struct vnode *a_dvp;
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struct vnode **a_vpp;
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struct componentname *a_cnp;
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struct vattr *a_vap;
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char *a_target;
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} */ *ap = v;
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int ret;
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SET_DIROP(VTOI(ap->a_dvp)->i_lfs);
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MARK_VNODE(ap->a_dvp);
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ret = ufs_symlink(ap);
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SET_ENDOP(VTOI(ap->a_dvp)->i_lfs);
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return (ret);
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}
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int
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lfs_mknod(v)
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void *v;
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{
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struct vop_mknod_args /* {
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struct vnode *a_dvp;
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struct vnode **a_vpp;
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struct componentname *a_cnp;
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struct vattr *a_vap;
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} */ *ap = v;
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int ret;
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SET_DIROP(VTOI(ap->a_dvp)->i_lfs);
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MARK_VNODE(ap->a_dvp);
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ret = ufs_mknod(ap);
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SET_ENDOP(VTOI(ap->a_dvp)->i_lfs);
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return (ret);
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}
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int
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lfs_create(v)
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void *v;
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{
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struct vop_create_args /* {
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struct vnode *a_dvp;
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struct vnode **a_vpp;
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struct componentname *a_cnp;
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struct vattr *a_vap;
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} */ *ap = v;
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int ret;
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SET_DIROP(VTOI(ap->a_dvp)->i_lfs);
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MARK_VNODE(ap->a_dvp);
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ret = ufs_create(ap);
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SET_ENDOP(VTOI(ap->a_dvp)->i_lfs);
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return (ret);
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}
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int
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lfs_mkdir(v)
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void *v;
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{
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struct vop_mkdir_args /* {
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struct vnode *a_dvp;
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struct vnode **a_vpp;
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struct componentname *a_cnp;
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struct vattr *a_vap;
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} */ *ap = v;
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int ret;
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SET_DIROP(VTOI(ap->a_dvp)->i_lfs);
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MARK_VNODE(ap->a_dvp);
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ret = ufs_mkdir(ap);
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SET_ENDOP(VTOI(ap->a_dvp)->i_lfs);
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return (ret);
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}
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int
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lfs_remove(v)
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void *v;
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{
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struct vop_remove_args /* {
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struct vnode *a_dvp;
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struct vnode *a_vp;
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struct componentname *a_cnp;
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} */ *ap = v;
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int ret;
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SET_DIROP(VTOI(ap->a_dvp)->i_lfs);
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MARK_VNODE(ap->a_dvp);
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MARK_VNODE(ap->a_vp);
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ret = ufs_remove(ap);
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SET_ENDOP(VTOI(ap->a_dvp)->i_lfs);
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return (ret);
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}
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int
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lfs_rmdir(v)
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void *v;
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{
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struct vop_rmdir_args /* {
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struct vnodeop_desc *a_desc;
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struct vnode *a_dvp;
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struct vnode *a_vp;
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struct componentname *a_cnp;
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} */ *ap = v;
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int ret;
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SET_DIROP(VTOI(ap->a_dvp)->i_lfs);
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MARK_VNODE(ap->a_dvp);
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MARK_VNODE(ap->a_vp);
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ret = ufs_rmdir(ap);
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SET_ENDOP(VTOI(ap->a_dvp)->i_lfs);
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return (ret);
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}
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int
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lfs_link(v)
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void *v;
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{
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struct vop_link_args /* {
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struct vnode *a_dvp;
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struct vnode *a_vp;
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struct componentname *a_cnp;
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} */ *ap = v;
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int ret;
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SET_DIROP(VTOI(ap->a_dvp)->i_lfs);
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MARK_VNODE(ap->a_dvp);
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ret = ufs_link(ap);
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SET_ENDOP(VTOI(ap->a_dvp)->i_lfs);
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return (ret);
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}
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int
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lfs_rename(v)
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void *v;
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{
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struct vop_rename_args /* {
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struct vnode *a_fdvp;
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struct vnode *a_fvp;
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struct componentname *a_fcnp;
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struct vnode *a_tdvp;
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struct vnode *a_tvp;
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struct componentname *a_tcnp;
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} */ *ap = v;
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int ret;
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|
|
|
SET_DIROP(VTOI(ap->a_fdvp)->i_lfs);
|
|
MARK_VNODE(ap->a_fdvp);
|
|
MARK_VNODE(ap->a_tdvp);
|
|
ret = ufs_rename(ap);
|
|
SET_ENDOP(VTOI(ap->a_fdvp)->i_lfs);
|
|
return (ret);
|
|
}
|
|
/* XXX hack to avoid calling ITIMES in getattr */
|
|
int
|
|
lfs_getattr(v)
|
|
void *v;
|
|
{
|
|
struct vop_getattr_args /* {
|
|
struct vnode *a_vp;
|
|
struct vattr *a_vap;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
register struct vnode *vp = ap->a_vp;
|
|
register struct inode *ip = VTOI(vp);
|
|
register struct vattr *vap = ap->a_vap;
|
|
/*
|
|
* 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 = ip->i_ffs_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 = dbtob(ip->i_ffs_blocks);
|
|
vap->va_type = vp->v_type;
|
|
vap->va_filerev = ip->i_modrev;
|
|
return (0);
|
|
}
|
|
/*
|
|
* 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(v)
|
|
void *v;
|
|
{
|
|
struct vop_close_args /* {
|
|
struct vnode *a_vp;
|
|
int a_fflag;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
register struct vnode *vp = ap->a_vp;
|
|
register struct inode *ip = VTOI(vp);
|
|
int mod;
|
|
struct timespec ts;
|
|
|
|
simple_lock(&vp->v_interlock);
|
|
if (vp->v_usecount > 1) {
|
|
mod = ip->i_flag & IN_MODIFIED;
|
|
TIMEVAL_TO_TIMESPEC(&time, &ts);
|
|
FFS_ITIMES(ip, &ts, &ts, &ts);
|
|
if (!mod && ip->i_flag & IN_MODIFIED)
|
|
ip->i_lfs->lfs_uinodes++;
|
|
}
|
|
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(v)
|
|
void *v;
|
|
{
|
|
struct vop_reclaim_args /* {
|
|
struct vnode *a_vp;
|
|
struct proc *a_p;
|
|
} */ *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
int error;
|
|
|
|
if ((error = ufs_reclaim(vp, ap->a_p)))
|
|
return (error);
|
|
FREE(vp->v_data, M_LFSNODE);
|
|
vp->v_data = NULL;
|
|
return (0);
|
|
}
|