/* $OpenBSD: lfs_vnops.c,v 1.11 2004/06/24 19:35:27 tholo Exp $ */ /* $NetBSD: lfs_vnops.c,v 1.11 1996/05/11 18:27:41 mycroft Exp $ */ /* * Copyright (c) 1986, 1989, 1991, 1993, 1995 * 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. 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. * * @(#)lfs_vnops.c 8.13 (Berkeley) 6/10/95 */ #include <sys/param.h> #include <sys/systm.h> #include <sys/namei.h> #include <sys/resourcevar.h> #include <sys/kernel.h> #include <sys/file.h> #include <sys/stat.h> #include <sys/buf.h> #include <sys/proc.h> #include <sys/conf.h> #include <sys/mount.h> #include <sys/vnode.h> #include <sys/malloc.h> #include <sys/signalvar.h> #include <uvm/uvm_extern.h> #include <miscfs/specfs/specdev.h> #include <miscfs/fifofs/fifo.h> #include <ufs/ufs/quota.h> #include <ufs/ufs/inode.h> #include <ufs/ufs/dir.h> #include <ufs/ufs/ufsmount.h> #include <ufs/ufs/ufs_extern.h> #include <ufs/lfs/lfs.h> #include <ufs/lfs/lfs_extern.h> /* Global vfs data structures for lfs. */ int (**lfs_vnodeop_p)(void *); struct vnodeopv_entry_desc lfs_vnodeop_entries[] = { { &vop_default_desc, vn_default_error }, { &vop_lookup_desc, ufs_lookup }, /* lookup */ { &vop_create_desc, ufs_create }, /* create */ { &vop_whiteout_desc, ufs_whiteout }, /* whiteout */ { &vop_mknod_desc, ufs_mknod }, /* mknod */ { &vop_open_desc, ufs_open }, /* open */ { &vop_close_desc, lfs_close }, /* close */ { &vop_access_desc, ufs_access }, /* access */ { &vop_getattr_desc, lfs_getattr }, /* getattr */ { &vop_setattr_desc, ufs_setattr }, /* setattr */ { &vop_read_desc, lfs_read }, /* read */ { &vop_write_desc, lfs_write }, /* write */ { &vop_lease_desc, ufs_lease_check }, /* lease */ { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ { &vop_poll_desc, ufs_poll }, /* poll */ { &vop_mmap_desc, ufs_mmap }, /* mmap */ { &vop_fsync_desc, lfs_fsync }, /* fsync */ { &vop_seek_desc, ufs_seek }, /* seek */ { &vop_remove_desc, ufs_remove }, /* remove */ { &vop_link_desc, ufs_link }, /* link */ { &vop_rename_desc, ufs_rename }, /* rename */ { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ { &vop_symlink_desc, ufs_symlink }, /* symlink */ { &vop_readdir_desc, ufs_readdir }, /* readdir */ { &vop_readlink_desc, ufs_readlink }, /* readlink */ { &vop_abortop_desc, ufs_abortop }, /* abortop */ { &vop_inactive_desc, lfs_inactive }, /* inactive */ { &vop_reclaim_desc, lfs_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, lfs_blkatoff }, /* blkatoff */ { &vop_valloc_desc, lfs_valloc }, /* valloc */ { &vop_vfree_desc, lfs_vfree }, /* vfree */ { &vop_truncate_desc, lfs_truncate }, /* truncate */ { &vop_update_desc, lfs_update }, /* update */ { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ { NULL, NULL } }; struct vnodeopv_desc lfs_vnodeop_opv_desc = { &lfs_vnodeop_p, lfs_vnodeop_entries }; int (**lfs_specop_p)(void *); struct vnodeopv_entry_desc lfs_specop_entries[] = { { &vop_default_desc, spec_vnoperate }, { &vop_close_desc, ufsspec_close }, /* close */ { &vop_access_desc, ufs_access }, /* access */ { &vop_getattr_desc, lfs_getattr }, /* getattr */ { &vop_setattr_desc, ufs_setattr }, /* setattr */ { &vop_read_desc, ufsspec_read }, /* read */ { &vop_write_desc, ufsspec_write }, /* write */ { &vop_inactive_desc, lfs_inactive }, /* inactive */ { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ { &vop_lock_desc, ufs_lock }, /* lock */ { &vop_unlock_desc, ufs_unlock }, /* unlock */ { &vop_print_desc, ufs_print }, /* print */ { &vop_islocked_desc, ufs_islocked }, /* islocked */ { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ { NULL, NULL } }; struct vnodeopv_desc lfs_specop_opv_desc = { &lfs_specop_p, lfs_specop_entries }; #ifdef FIFO int (**lfs_fifoop_p)(void *); struct vnodeopv_entry_desc lfs_fifoop_entries[] = { { &vop_default_desc, fifo_vnoperate }, { &vop_close_desc, ufsfifo_close }, /* close */ { &vop_access_desc, ufs_access }, /* access */ { &vop_getattr_desc, lfs_getattr }, /* getattr */ { &vop_setattr_desc, ufs_setattr }, /* setattr */ { &vop_read_desc, ufsfifo_read }, /* read */ { &vop_write_desc, ufsfifo_write }, /* write */ { &vop_inactive_desc, lfs_inactive }, /* inactive */ { &vop_reclaim_desc, lfs_reclaim }, /* reclaim */ { &vop_lock_desc, ufs_lock }, /* lock */ { &vop_unlock_desc, ufs_unlock }, /* unlock */ { &vop_print_desc, ufs_print }, /* print */ { &vop_islocked_desc, ufs_islocked }, /* islocked */ { &vop_bwrite_desc, lfs_bwrite }, /* bwrite */ { NULL, NULL } }; struct vnodeopv_desc lfs_fifoop_opv_desc = { &lfs_fifoop_p, lfs_fifoop_entries }; #endif /* FIFO */ #define LFS_READWRITE #include <ufs/ufs/ufs_readwrite.c> #undef LFS_READWRITE /* * Synch an open file. */ /* ARGSUSED */ int lfs_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; struct timespec ts; getnanotime(&ts); return (VOP_UPDATE(ap->a_vp, &ts, &ts, ap->a_waitfor == MNT_WAIT ? LFS_SYNC : 0)); } /* * These macros are used to bracket UFS directory ops, so that we can * identify all the pages touched during directory ops which need to * be ordered and flushed atomically, so that they may be recovered. */ #define SET_DIROP(fs) { \ if ((fs)->lfs_writer) \ tsleep(&(fs)->lfs_dirops, PRIBIO + 1, "lfs_dirop", 0); \ ++(fs)->lfs_dirops; \ (fs)->lfs_doifile = 1; \ } #define SET_ENDOP(fs) { \ --(fs)->lfs_dirops; \ if (!(fs)->lfs_dirops) \ wakeup(&(fs)->lfs_writer); \ } #define MARK_VNODE(dvp) (dvp)->v_flag |= VDIROP int lfs_symlink(v) void *v; { struct vop_symlink_args /* { struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; struct vattr *a_vap; char *a_target; } */ *ap = v; int ret; SET_DIROP(VTOI(ap->a_dvp)->i_lfs); MARK_VNODE(ap->a_dvp); ret = ufs_symlink(ap); SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); return (ret); } int lfs_mknod(v) void *v; { struct vop_mknod_args /* { struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; struct vattr *a_vap; } */ *ap = v; int ret; SET_DIROP(VTOI(ap->a_dvp)->i_lfs); MARK_VNODE(ap->a_dvp); ret = ufs_mknod(ap); SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); return (ret); } int lfs_create(v) void *v; { struct vop_create_args /* { struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; struct vattr *a_vap; } */ *ap = v; int ret; SET_DIROP(VTOI(ap->a_dvp)->i_lfs); MARK_VNODE(ap->a_dvp); ret = ufs_create(ap); SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); return (ret); } int lfs_mkdir(v) void *v; { struct vop_mkdir_args /* { struct vnode *a_dvp; struct vnode **a_vpp; struct componentname *a_cnp; struct vattr *a_vap; } */ *ap = v; int ret; SET_DIROP(VTOI(ap->a_dvp)->i_lfs); MARK_VNODE(ap->a_dvp); ret = ufs_mkdir(ap); SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); return (ret); } int lfs_remove(v) void *v; { struct vop_remove_args /* { struct vnode *a_dvp; struct vnode *a_vp; struct componentname *a_cnp; } */ *ap = v; int ret; SET_DIROP(VTOI(ap->a_dvp)->i_lfs); MARK_VNODE(ap->a_dvp); MARK_VNODE(ap->a_vp); ret = ufs_remove(ap); SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); return (ret); } int lfs_rmdir(v) void *v; { struct vop_rmdir_args /* { struct vnodeop_desc *a_desc; struct vnode *a_dvp; struct vnode *a_vp; struct componentname *a_cnp; } */ *ap = v; int ret; SET_DIROP(VTOI(ap->a_dvp)->i_lfs); MARK_VNODE(ap->a_dvp); MARK_VNODE(ap->a_vp); ret = ufs_rmdir(ap); SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); return (ret); } int lfs_link(v) void *v; { struct vop_link_args /* { struct vnode *a_dvp; struct vnode *a_vp; struct componentname *a_cnp; } */ *ap = v; int ret; SET_DIROP(VTOI(ap->a_dvp)->i_lfs); MARK_VNODE(ap->a_dvp); ret = ufs_link(ap); SET_ENDOP(VTOI(ap->a_dvp)->i_lfs); return (ret); } int lfs_rename(v) void *v; { struct vop_rename_args /* { struct vnode *a_fdvp; struct vnode *a_fvp; struct componentname *a_fcnp; struct vnode *a_tdvp; struct vnode *a_tvp; struct componentname *a_tcnp; } */ *ap = v; int ret; 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 FFS_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; if (vp->v_usecount > 1 && !(ip->i_flag & IN_LOCKED)) { mod = ip->i_flag & IN_MODIFIED; FFS_ITIMES(ip, &time, &time); if (!mod && ip->i_flag & IN_MODIFIED) ip->i_lfs->lfs_uinodes++; } return (0); } /* * Stub inactive routine that avoid calling ufs_inactive in some cases. */ int lfs_no_inactive = 0; int lfs_inactive(v) void *v; { struct vop_inactive_args /* { struct vnode *a_vp; } */ *ap = v; if (lfs_no_inactive) return (0); return (ufs_inactive(ap)); } /* * Reclaim an inode so that it can be used for other purposes. */ int lfs_reclaim(v) void *v; { struct vop_reclaim_args /* { struct vnode *a_vp; } */ *ap = v; register struct vnode *vp = ap->a_vp; int error; if ((error = ufs_reclaim(vp)) != 0) return (error); FREE(vp->v_data, M_LFSNODE); vp->v_data = NULL; return (0); }