314 lines
11 KiB
C
314 lines
11 KiB
C
/*
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* modified for EXT2FS support in Lites 1.1
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*
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* Aug 1995, Godmar Back (gback@cs.utah.edu)
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* University of Utah, Department of Computer Science
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*/
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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. 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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* @(#)ext2_vnops.c 8.7 (Berkeley) 2/3/94
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*/
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#if !defined(__FreeBSD__)
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#include "fifo.h"
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#include "diagnostic.h"
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#endif
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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/stat.h>
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#include <sys/buf.h>
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#include <sys/proc.h>
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#include <sys/mount.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <sys/vnode.h>
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#include <vm/vm.h>
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#include <vm/vm_extern.h>
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#include <miscfs/specfs/specdev.h>
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#include <miscfs/fifofs/fifo.h>
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#if !defined(__FreeBSD__)
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#include <ufs/ufs/lockf.h>
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#else
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#include <sys/signalvar.h>
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#endif
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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/ufs_extern.h>
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#include <ufs/ffs/ffs_extern.h>
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#include <gnu/ext2fs/ext2_fs_sb.h>
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#include <gnu/ext2fs/fs.h>
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#include <gnu/ext2fs/ext2_extern.h>
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static int ext2_fsync __P((struct vop_fsync_args *));
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static int ext2_read __P((struct vop_read_args *));
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static int ext2_write __P((struct vop_write_args *));
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/* Global vfs data structures for ufs. */
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vop_t **ext2_vnodeop_p;
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static struct vnodeopv_entry_desc ext2_vnodeop_entries[] = {
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{ &vop_default_desc, (vop_t *) vn_default_error },
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{ &vop_abortop_desc, (vop_t *) ufs_abortop },
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{ &vop_access_desc, (vop_t *) ufs_access },
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{ &vop_advlock_desc, (vop_t *) ufs_advlock },
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{ &vop_blkatoff_desc, (vop_t *) ext2_blkatoff },
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{ &vop_bmap_desc, (vop_t *) ufs_bmap },
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{ &vop_bwrite_desc, (vop_t *) vn_bwrite },
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{ &vop_cachedlookup_desc, (vop_t *) ext2_lookup },
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{ &vop_close_desc, (vop_t *) ufs_close },
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{ &vop_create_desc, (vop_t *) ufs_create },
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{ &vop_fsync_desc, (vop_t *) ext2_fsync },
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{ &vop_getattr_desc, (vop_t *) ufs_getattr },
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{ &vop_inactive_desc, (vop_t *) ext2_inactive },
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{ &vop_ioctl_desc, (vop_t *) ufs_ioctl },
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{ &vop_islocked_desc, (vop_t *) ufs_islocked },
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{ &vop_link_desc, (vop_t *) ufs_link },
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{ &vop_lock_desc, (vop_t *) ufs_lock },
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{ &vop_lookup_desc, (vop_t *) vfs_cache_lookup },
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{ &vop_mkdir_desc, (vop_t *) ufs_mkdir },
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{ &vop_mknod_desc, (vop_t *) ufs_mknod },
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{ &vop_mmap_desc, (vop_t *) ufs_mmap },
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{ &vop_open_desc, (vop_t *) ufs_open },
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{ &vop_pathconf_desc, (vop_t *) ufs_pathconf },
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{ &vop_poll_desc, (vop_t *) ufs_poll },
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{ &vop_print_desc, (vop_t *) ufs_print },
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{ &vop_read_desc, (vop_t *) ext2_read },
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{ &vop_readdir_desc, (vop_t *) ext2_readdir },
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{ &vop_readlink_desc, (vop_t *) ufs_readlink },
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{ &vop_reallocblks_desc, (vop_t *) ext2_reallocblks },
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{ &vop_reclaim_desc, (vop_t *) ufs_reclaim },
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{ &vop_remove_desc, (vop_t *) ufs_remove },
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{ &vop_rename_desc, (vop_t *) ufs_rename },
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{ &vop_rmdir_desc, (vop_t *) ufs_rmdir },
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{ &vop_seek_desc, (vop_t *) ufs_seek },
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{ &vop_setattr_desc, (vop_t *) ufs_setattr },
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{ &vop_strategy_desc, (vop_t *) ufs_strategy },
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{ &vop_symlink_desc, (vop_t *) ufs_symlink },
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{ &vop_truncate_desc, (vop_t *) ext2_truncate },
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{ &vop_unlock_desc, (vop_t *) ufs_unlock },
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{ &vop_update_desc, (vop_t *) ext2_update },
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{ &vop_valloc_desc, (vop_t *) ext2_valloc },
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{ &vop_vfree_desc, (vop_t *) ext2_vfree },
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{ &vop_write_desc, (vop_t *) ext2_write },
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{ NULL, NULL }
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};
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static struct vnodeopv_desc ext2fs_vnodeop_opv_desc =
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{ &ext2_vnodeop_p, ext2_vnodeop_entries };
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vop_t **ext2_specop_p;
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static struct vnodeopv_entry_desc ext2_specop_entries[] = {
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{ &vop_default_desc, (vop_t *) vn_default_error },
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{ &vop_abortop_desc, (vop_t *) spec_abortop },
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{ &vop_access_desc, (vop_t *) ufs_access },
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{ &vop_advlock_desc, (vop_t *) spec_advlock },
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{ &vop_blkatoff_desc, (vop_t *) spec_blkatoff },
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{ &vop_bmap_desc, (vop_t *) spec_bmap },
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{ &vop_bwrite_desc, (vop_t *) vn_bwrite },
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{ &vop_close_desc, (vop_t *) ufsspec_close },
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{ &vop_create_desc, (vop_t *) spec_create },
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{ &vop_fsync_desc, (vop_t *) ext2_fsync },
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{ &vop_getattr_desc, (vop_t *) ufs_getattr },
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{ &vop_inactive_desc, (vop_t *) ext2_inactive },
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{ &vop_ioctl_desc, (vop_t *) spec_ioctl },
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{ &vop_islocked_desc, (vop_t *) ufs_islocked },
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{ &vop_link_desc, (vop_t *) spec_link },
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{ &vop_lock_desc, (vop_t *) ufs_lock },
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{ &vop_lookup_desc, (vop_t *) spec_lookup },
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{ &vop_mkdir_desc, (vop_t *) spec_mkdir },
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{ &vop_mknod_desc, (vop_t *) spec_mknod },
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{ &vop_mmap_desc, (vop_t *) spec_mmap },
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{ &vop_open_desc, (vop_t *) spec_open },
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{ &vop_pathconf_desc, (vop_t *) spec_pathconf },
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{ &vop_poll_desc, (vop_t *) spec_poll },
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{ &vop_print_desc, (vop_t *) ufs_print },
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{ &vop_read_desc, (vop_t *) ufsspec_read },
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{ &vop_readdir_desc, (vop_t *) spec_readdir },
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{ &vop_readlink_desc, (vop_t *) spec_readlink },
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{ &vop_reallocblks_desc, (vop_t *) spec_reallocblks },
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{ &vop_reclaim_desc, (vop_t *) ufs_reclaim },
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{ &vop_remove_desc, (vop_t *) spec_remove },
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{ &vop_rename_desc, (vop_t *) spec_rename },
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{ &vop_rmdir_desc, (vop_t *) spec_rmdir },
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{ &vop_seek_desc, (vop_t *) spec_seek },
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{ &vop_setattr_desc, (vop_t *) ufs_setattr },
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{ &vop_strategy_desc, (vop_t *) spec_strategy },
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{ &vop_symlink_desc, (vop_t *) spec_symlink },
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{ &vop_truncate_desc, (vop_t *) spec_truncate },
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{ &vop_unlock_desc, (vop_t *) ufs_unlock },
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{ &vop_update_desc, (vop_t *) ext2_update },
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{ &vop_valloc_desc, (vop_t *) spec_valloc },
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{ &vop_vfree_desc, (vop_t *) ext2_vfree },
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{ &vop_write_desc, (vop_t *) ufsspec_write },
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{ NULL, NULL }
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};
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static struct vnodeopv_desc ext2fs_specop_opv_desc =
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{ &ext2_specop_p, ext2_specop_entries };
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vop_t **ext2_fifoop_p;
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static struct vnodeopv_entry_desc ext2_fifoop_entries[] = {
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{ &vop_default_desc, (vop_t *) vn_default_error },
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{ &vop_abortop_desc, (vop_t *) fifo_abortop },
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{ &vop_access_desc, (vop_t *) ufs_access },
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{ &vop_advlock_desc, (vop_t *) fifo_advlock },
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{ &vop_blkatoff_desc, (vop_t *) fifo_blkatoff },
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{ &vop_bmap_desc, (vop_t *) fifo_bmap },
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{ &vop_bwrite_desc, (vop_t *) vn_bwrite },
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{ &vop_close_desc, (vop_t *) ufsfifo_close },
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{ &vop_create_desc, (vop_t *) fifo_create },
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{ &vop_fsync_desc, (vop_t *) ext2_fsync },
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{ &vop_getattr_desc, (vop_t *) ufs_getattr },
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{ &vop_inactive_desc, (vop_t *) ext2_inactive },
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{ &vop_ioctl_desc, (vop_t *) fifo_ioctl },
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{ &vop_islocked_desc, (vop_t *) ufs_islocked },
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{ &vop_link_desc, (vop_t *) fifo_link },
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{ &vop_lock_desc, (vop_t *) ufs_lock },
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{ &vop_lookup_desc, (vop_t *) fifo_lookup },
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{ &vop_mkdir_desc, (vop_t *) fifo_mkdir },
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{ &vop_mknod_desc, (vop_t *) fifo_mknod },
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{ &vop_mmap_desc, (vop_t *) fifo_mmap },
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{ &vop_open_desc, (vop_t *) fifo_open },
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{ &vop_pathconf_desc, (vop_t *) fifo_pathconf },
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{ &vop_poll_desc, (vop_t *) fifo_poll },
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{ &vop_print_desc, (vop_t *) ufs_print },
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{ &vop_read_desc, (vop_t *) ufsfifo_read },
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{ &vop_readdir_desc, (vop_t *) fifo_readdir },
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{ &vop_readlink_desc, (vop_t *) fifo_readlink },
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{ &vop_reallocblks_desc, (vop_t *) fifo_reallocblks },
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{ &vop_reclaim_desc, (vop_t *) ufs_reclaim },
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{ &vop_remove_desc, (vop_t *) fifo_remove },
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{ &vop_rename_desc, (vop_t *) fifo_rename },
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{ &vop_rmdir_desc, (vop_t *) fifo_rmdir },
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{ &vop_seek_desc, (vop_t *) fifo_seek },
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{ &vop_setattr_desc, (vop_t *) ufs_setattr },
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{ &vop_strategy_desc, (vop_t *) fifo_strategy },
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{ &vop_symlink_desc, (vop_t *) fifo_symlink },
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{ &vop_truncate_desc, (vop_t *) fifo_truncate },
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{ &vop_unlock_desc, (vop_t *) ufs_unlock },
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{ &vop_update_desc, (vop_t *) ext2_update },
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{ &vop_valloc_desc, (vop_t *) fifo_valloc },
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{ &vop_vfree_desc, (vop_t *) ext2_vfree },
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{ &vop_write_desc, (vop_t *) ufsfifo_write },
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{ NULL, NULL }
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};
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static struct vnodeopv_desc ext2fs_fifoop_opv_desc =
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{ &ext2_fifoop_p, ext2_fifoop_entries };
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#if defined(__FreeBSD__)
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VNODEOP_SET(ext2fs_vnodeop_opv_desc);
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VNODEOP_SET(ext2fs_specop_opv_desc);
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VNODEOP_SET(ext2fs_fifoop_opv_desc);
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#endif
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#include <gnu/ext2fs/ext2_readwrite.c>
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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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static int
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ext2_fsync(ap)
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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;
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{
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register struct vnode *vp = ap->a_vp;
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register struct buf *bp;
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struct timeval tv;
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struct buf *nbp;
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int s;
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/*
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* Clean memory object.
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* XXX add this to all file systems.
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* XXX why is all this fs specific?
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*/
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#if !defined(__FreeBSD__)
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vn_pager_sync(vp, ap->a_waitfor);
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#endif
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/*
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* Flush all dirty buffers associated with a vnode.
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*/
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ext2_discard_prealloc(VTOI(vp));
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loop:
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s = splbio();
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for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) {
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nbp = bp->b_vnbufs.le_next;
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if ((bp->b_flags & B_BUSY))
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continue;
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if ((bp->b_flags & B_DELWRI) == 0)
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panic("ext2_fsync: not dirty");
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bremfree(bp);
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bp->b_flags |= B_BUSY;
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splx(s);
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/*
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* Wait for I/O associated with indirect blocks to complete,
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* since there is no way to quickly wait for them below.
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*/
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if (bp->b_vp == vp || ap->a_waitfor == MNT_NOWAIT)
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(void) bawrite(bp);
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else
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(void) bwrite(bp);
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goto loop;
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}
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if (ap->a_waitfor == MNT_WAIT) {
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while (vp->v_numoutput) {
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vp->v_flag |= VBWAIT;
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#if !defined(__FreeBSD__)
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sleep((caddr_t)&vp->v_numoutput, PRIBIO + 1);
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#else
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tsleep((caddr_t)&vp->v_numoutput, PRIBIO + 1, "extfsn", 0);
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#endif
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}
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#if DIAGNOSTIC
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if (vp->v_dirtyblkhd.lh_first) {
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vprint("ext2_fsync: dirty", vp);
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goto loop;
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}
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#endif
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}
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splx(s);
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gettime(&tv);
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return (VOP_UPDATE(ap->a_vp, &tv, &tv, ap->a_waitfor == MNT_WAIT));
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}
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