diff options
Diffstat (limited to 'sys/gnu/ext2fs/ext2_vnops.c')
| -rw-r--r-- | sys/gnu/ext2fs/ext2_vnops.c | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/sys/gnu/ext2fs/ext2_vnops.c b/sys/gnu/ext2fs/ext2_vnops.c new file mode 100644 index 00000000000..0172713a6d4 --- /dev/null +++ b/sys/gnu/ext2fs/ext2_vnops.c @@ -0,0 +1,320 @@ +/* $OpenBSD: ext2_vnops.c,v 1.1 1996/06/24 03:34:58 downsj Exp $ */ + +/* + * modified for EXT2FS support in Lites 1.1 + * + * Aug 1995, Godmar Back (gback@cs.utah.edu) + * University of Utah, Department of Computer Science + */ +/* + * Copyright (c) 1982, 1986, 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)ext2_vnops.c 8.7 (Berkeley) 2/3/94 + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/resourcevar.h> +#include <sys/kernel.h> +#include <sys/file.h> +#include <sys/stat.h> +#include <sys/buf.h> +#include <sys/proc.h> +#include <sys/conf.h> +#include <sys/mount.h> +#include <sys/vnode.h> +#include <sys/malloc.h> + +#include <vm/vm.h> +#include <vm/vm_extern.h> + +#include <miscfs/specfs/specdev.h> +#include <miscfs/fifofs/fifo.h> + +#include <sys/lockf.h> +#include <sys/signalvar.h> +#include <ufs/ufs/quota.h> +#include <ufs/ufs/inode.h> +#include <ufs/ufs/dir.h> +#include <ufs/ufs/ufs_extern.h> + +#include <ufs/ffs/ffs_extern.h> + +#include <gnu/ext2fs/ext2_fs.h> +#include <gnu/ext2fs/ext2_fs_sb.h> +#include <gnu/ext2fs/fs.h> +#include <gnu/ext2fs/ext2_extern.h> + +int ext2_fsync __P((void *)); +int ext2_read __P((void *)); +int ext2_write __P((void *)); + +/* Global vfs data structures for ext2fs. */ +int (**ext2_vnodeop_p) __P((void *)); +static struct vnodeopv_entry_desc ext2_vnodeop_entries[] = { + { &vop_default_desc, vn_default_error }, + { &vop_lookup_desc, ext2_lookup }, /* lookup */ + { &vop_create_desc, ufs_create }, /* create */ + { &vop_mknod_desc, ufs_mknod }, /* mknod */ + { &vop_open_desc, ufs_open }, /* open */ + { &vop_close_desc, ufs_close }, /* close */ + { &vop_access_desc, ufs_access }, /* access */ + { &vop_getattr_desc, ufs_getattr }, /* getattr */ + { &vop_setattr_desc, ufs_setattr }, /* setattr */ + { &vop_read_desc, ext2_read }, /* read */ + { &vop_write_desc, ext2_write }, /* write */ + { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ + { &vop_select_desc, ufs_select }, /* select */ + { &vop_mmap_desc, ufs_mmap }, /* mmap */ + { &vop_fsync_desc, ext2_fsync }, /* fsync */ + { &vop_seek_desc, ufs_seek }, /* seek */ + { &vop_remove_desc, ufs_remove }, /* remove */ + { &vop_link_desc, ufs_link }, /* link */ + { &vop_rename_desc, ufs_rename }, /* rename */ + { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ + { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ + { &vop_symlink_desc, ufs_symlink }, /* symlink */ + { &vop_readdir_desc, ext2_readdir }, /* readdir */ + { &vop_readlink_desc, ufs_readlink }, /* readlink */ + { &vop_abortop_desc, ufs_abortop }, /* abortop */ + { &vop_inactive_desc, ext2_inactive }, /* inactive */ + { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ + { &vop_lock_desc, ufs_lock }, /* lock */ + { &vop_unlock_desc, ufs_unlock }, /* unlock */ + { &vop_bmap_desc, ufs_bmap }, /* bmap */ + { &vop_strategy_desc, ufs_strategy }, /* strategy */ + { &vop_print_desc, ufs_print }, /* print */ + { &vop_islocked_desc, ufs_islocked }, /* islocked */ + { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ + { &vop_advlock_desc, ufs_advlock }, /* advlock */ + { &vop_blkatoff_desc, ext2_blkatoff }, /* blkatoff */ + { &vop_valloc_desc, ext2_valloc }, /* valloc */ + { &vop_reallocblks_desc, ext2_reallocblks }, /* reallocblks */ + { &vop_vfree_desc, ext2_vfree }, /* vfree */ + { &vop_truncate_desc, ext2_truncate }, /* truncate */ + { &vop_update_desc, ext2_update }, /* update */ + { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ + { (struct vnodeop_desc*)NULL, (int(*) __P((void*)))NULL } +}; +static struct vnodeopv_desc ext2fs_vnodeop_opv_desc = + { &ext2_vnodeop_p, ext2_vnodeop_entries }; + +int (**ext2_specop_p) __P((void *)); +static struct vnodeopv_entry_desc ext2_specop_entries[] = { + { &vop_default_desc, vn_default_error }, + { &vop_lookup_desc, spec_lookup }, /* lookup */ + { &vop_create_desc, spec_create }, /* create */ + { &vop_mknod_desc, spec_mknod }, /* mknod */ + { &vop_open_desc, spec_open }, /* open */ + { &vop_close_desc, ufsspec_close }, /* close */ + { &vop_access_desc, ufs_access }, /* access */ + { &vop_getattr_desc, ufs_getattr }, /* getattr */ + { &vop_setattr_desc, ufs_setattr }, /* setattr */ + { &vop_read_desc, ufsspec_read }, /* read */ + { &vop_write_desc, ufsspec_write }, /* write */ + { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ + { &vop_select_desc, spec_select }, /* select */ + { &vop_mmap_desc, spec_mmap }, /* mmap */ + { &vop_fsync_desc, ext2_fsync }, /* fsync */ + { &vop_seek_desc, spec_seek }, /* seek */ + { &vop_remove_desc, spec_remove }, /* remove */ + { &vop_link_desc, spec_link }, /* link */ + { &vop_rename_desc, spec_rename }, /* rename */ + { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ + { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ + { &vop_symlink_desc, spec_symlink }, /* symlink */ + { &vop_readdir_desc, spec_readdir }, /* readdir */ + { &vop_readlink_desc, spec_readlink }, /* readlink */ + { &vop_abortop_desc, spec_abortop }, /* abortop */ + { &vop_inactive_desc, ext2_inactive }, /* inactive */ + { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ + { &vop_lock_desc, ufs_lock }, /* lock */ + { &vop_unlock_desc, ufs_unlock }, /* unlock */ + { &vop_bmap_desc, spec_bmap }, /* bmap */ + { &vop_strategy_desc, spec_strategy }, /* strategy */ + { &vop_print_desc, ufs_print }, /* print */ + { &vop_islocked_desc, ufs_islocked }, /* islocked */ + { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ + { &vop_advlock_desc, spec_advlock }, /* advlock */ + { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ + { &vop_valloc_desc, spec_valloc }, /* valloc */ + { &vop_reallocblks_desc, spec_reallocblks }, /* reallocblks */ + { &vop_vfree_desc, ext2_vfree }, /* vfree */ + { &vop_truncate_desc, spec_truncate }, /* truncate */ + { &vop_update_desc, ext2_update }, /* update */ + { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ + { (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL } +}; +static struct vnodeopv_desc ext2fs_specop_opv_desc = + { &ext2_specop_p, ext2_specop_entries }; + +#ifdef FIFO +int (**ext2_fifoop_p) __P((void *)); +static struct vnodeopv_entry_desc ext2_fifoop_entries[] = { + { &vop_default_desc, vn_default_error }, + { &vop_lookup_desc, fifo_lookup }, /* lookup */ + { &vop_create_desc, fifo_create }, /* create */ + { &vop_mknod_desc, fifo_mknod }, /* mknod */ + { &vop_open_desc, fifo_open }, /* open */ + { &vop_close_desc, ufsfifo_close }, /* close */ + { &vop_access_desc, ufs_access }, /* access */ + { &vop_getattr_desc, ufs_getattr }, /* getattr */ + { &vop_setattr_desc, ufs_setattr }, /* setattr */ + { &vop_read_desc, ufsfifo_read }, /* read */ + { &vop_write_desc, ufsfifo_write }, /* write */ + { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ + { &vop_select_desc, fifo_select }, /* select */ + { &vop_mmap_desc, fifo_mmap }, /* mmap */ + { &vop_fsync_desc, ext2_fsync }, /* fsync */ + { &vop_seek_desc, fifo_seek }, /* seek */ + { &vop_remove_desc, fifo_remove }, /* remove */ + { &vop_link_desc, fifo_link }, /* link */ + { &vop_rename_desc, fifo_rename }, /* rename */ + { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ + { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ + { &vop_symlink_desc, fifo_symlink }, /* symlink */ + { &vop_readdir_desc, fifo_readdir }, /* readdir */ + { &vop_readlink_desc, fifo_readlink }, /* readlink */ + { &vop_abortop_desc, fifo_abortop }, /* abortop */ + { &vop_inactive_desc, ext2_inactive }, /* inactive */ + { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ + { &vop_lock_desc, ufs_lock }, /* lock */ + { &vop_unlock_desc, ufs_unlock }, /* unlock */ + { &vop_bmap_desc, fifo_bmap }, /* bmap */ + { &vop_strategy_desc, fifo_strategy }, /* strategy */ + { &vop_print_desc, ufs_print }, /* print */ + { &vop_islocked_desc, ufs_islocked }, /* islocked */ + { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ + { &vop_advlock_desc, fifo_advlock }, /* advlock */ + { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ + { &vop_valloc_desc, fifo_valloc }, /* valloc */ + { &vop_reallocblks_desc, fifo_reallocblks }, /* reallocblks */ + { &vop_vfree_desc, ext2_vfree }, /* vfree */ + { &vop_truncate_desc, fifo_truncate }, /* truncate */ + { &vop_update_desc, ext2_update }, /* update */ + { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ + { (struct vnodeop_desc*)NULL, (int(*) __P((void *)))NULL } +}; +static struct vnodeopv_desc ext2fs_fifoop_opv_desc = + { &ext2_fifoop_p, ext2_fifoop_entries }; +#endif /* FIFO */ + +#ifdef DEBUG +/* + * Enabling cluster read/write operations. + */ +#include <sys/sysctl.h> +int doclusterread = 1; +struct ctldebug debug11 = { "doclusterread", &doclusterread }; +int doclusterwrite = 1; +struct ctldebug debug12 = { "doclusterwrite", &doclusterwrite }; +#else +/* XXX for ufs_readwrite */ +#define doclusterread 1 +#define doclusterwrite 1 +#endif + +#define EXT2_READWRITE +#include <ufs/ufs/ufs_readwrite.c> + +/* + * Synch an open file. + */ +/* ARGSUSED */ +int +ext2_fsync(v) + void *v; +{ + struct vop_fsync_args /* { + struct vnode *a_vp; + struct ucred *a_cred; + int a_waitfor; + struct proc *a_p; + } */ *ap = v; + register struct vnode *vp = ap->a_vp; + register struct buf *bp; + struct timespec ts; + struct buf *nbp; + int s; + +#if 0 + /* + * Clean memory object. + * XXX add this to all file systems. + * XXX why is all this fs specific? + */ + vn_pager_sync(vp, ap->a_waitfor); +#endif + + /* + * Flush all dirty buffers associated with a vnode. + */ + ext2_discard_prealloc(VTOI(vp)); + +loop: + s = splbio(); + for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { + nbp = bp->b_vnbufs.le_next; + if ((bp->b_flags & B_BUSY)) + continue; + if ((bp->b_flags & B_DELWRI) == 0) + panic("ext2_fsync: not dirty"); + bremfree(bp); + bp->b_flags |= B_BUSY; + splx(s); + /* + * Wait for I/O associated with indirect blocks to complete, + * since there is no way to quickly wait for them below. + */ + if (bp->b_vp == vp || ap->a_waitfor == MNT_NOWAIT) + (void) bawrite(bp); + else + (void) bwrite(bp); + goto loop; + } + if (ap->a_waitfor == MNT_WAIT) { + while (vp->v_numoutput) { + vp->v_flag |= VBWAIT; + tsleep((caddr_t)&vp->v_numoutput, PRIBIO + 1, "extfsn", 0); + } +#if DIAGNOSTIC + if (vp->v_dirtyblkhd.lh_first) { + vprint("ext2_fsync: dirty", vp); + goto loop; + } +#endif + } + splx(s); + + TIMEVAL_TO_TIMESPEC(&time, &ts); + return (VOP_UPDATE(ap->a_vp, &ts, &ts, ap->a_waitfor == MNT_WAIT)); +} |