/* $NetBSD: ffs_vnops.c,v 1.99 2008/04/29 18:18:09 ad Exp $ */ /* * 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. 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. * * @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95 */ #include __KERNEL_RCSID(0, "$NetBSD: ffs_vnops.c,v 1.99 2008/04/29 18:18:09 ad Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* Global vfs data structures for ufs. */ int (**ffs_vnodeop_p)(void *); const struct vnodeopv_entry_desc ffs_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, ufs_close }, /* close */ { &vop_access_desc, ufs_access }, /* access */ { &vop_getattr_desc, ufs_getattr }, /* getattr */ { &vop_setattr_desc, ufs_setattr }, /* setattr */ { &vop_read_desc, ffs_read }, /* read */ { &vop_write_desc, ffs_write }, /* write */ { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */ { &vop_poll_desc, ufs_poll }, /* poll */ { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ { &vop_revoke_desc, ufs_revoke }, /* revoke */ { &vop_mmap_desc, ufs_mmap }, /* mmap */ { &vop_fsync_desc, ffs_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, ufs_inactive }, /* inactive */ { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ { &vop_lock_desc, ffs_lock }, /* lock */ { &vop_unlock_desc, ffs_unlock }, /* unlock */ { &vop_bmap_desc, ufs_bmap }, /* bmap */ { &vop_strategy_desc, ufs_strategy }, /* strategy */ { &vop_print_desc, ufs_print }, /* print */ { &vop_islocked_desc, ffs_islocked }, /* islocked */ { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ { &vop_advlock_desc, ufs_advlock }, /* advlock */ { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ { &vop_getpages_desc, genfs_getpages }, /* getpages */ { &vop_putpages_desc, genfs_putpages }, /* putpages */ { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ { NULL, NULL } }; const struct vnodeopv_desc ffs_vnodeop_opv_desc = { &ffs_vnodeop_p, ffs_vnodeop_entries }; int (**ffs_specop_p)(void *); const struct vnodeopv_entry_desc ffs_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_fcntl_desc, ufs_fcntl }, /* fcntl */ { &vop_poll_desc, spec_poll }, /* poll */ { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ { &vop_revoke_desc, spec_revoke }, /* revoke */ { &vop_mmap_desc, spec_mmap }, /* mmap */ { &vop_fsync_desc, ffs_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, ufs_inactive }, /* inactive */ { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ { &vop_lock_desc, ffs_lock }, /* lock */ { &vop_unlock_desc, ffs_unlock }, /* unlock */ { &vop_bmap_desc, spec_bmap }, /* bmap */ { &vop_strategy_desc, spec_strategy }, /* strategy */ { &vop_print_desc, ufs_print }, /* print */ { &vop_islocked_desc, ffs_islocked }, /* islocked */ { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ { &vop_advlock_desc, spec_advlock }, /* advlock */ { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ { &vop_getpages_desc, spec_getpages }, /* getpages */ { &vop_putpages_desc, spec_putpages }, /* putpages */ { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ { NULL, NULL } }; const struct vnodeopv_desc ffs_specop_opv_desc = { &ffs_specop_p, ffs_specop_entries }; int (**ffs_fifoop_p)(void *); const struct vnodeopv_entry_desc ffs_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_fcntl_desc, ufs_fcntl }, /* fcntl */ { &vop_poll_desc, fifo_poll }, /* poll */ { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */ { &vop_revoke_desc, fifo_revoke }, /* revoke */ { &vop_mmap_desc, fifo_mmap }, /* mmap */ { &vop_fsync_desc, ffs_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, ufs_inactive }, /* inactive */ { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ { &vop_lock_desc, ffs_lock }, /* lock */ { &vop_unlock_desc, ffs_unlock }, /* unlock */ { &vop_bmap_desc, fifo_bmap }, /* bmap */ { &vop_strategy_desc, fifo_strategy }, /* strategy */ { &vop_print_desc, ufs_print }, /* print */ { &vop_islocked_desc, ffs_islocked }, /* islocked */ { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ { &vop_advlock_desc, fifo_advlock }, /* advlock */ { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ { &vop_putpages_desc, fifo_putpages }, /* putpages */ { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ { NULL, NULL } }; const struct vnodeopv_desc ffs_fifoop_opv_desc = { &ffs_fifoop_p, ffs_fifoop_entries }; #include int ffs_fsync(void *v) { struct vop_fsync_args /* { struct vnode *a_vp; kauth_cred_t a_cred; int a_flags; off_t a_offlo; off_t a_offhi; struct lwp *a_l; } */ *ap = v; struct buf *bp; int num, error, i; struct indir ia[NIADDR + 1]; int bsize; daddr_t blk_high; struct vnode *vp; vp = ap->a_vp; fstrans_start(vp->v_mount, FSTRANS_LAZY); /* * XXX no easy way to sync a range in a file with softdep. */ if ((ap->a_offlo == 0 && ap->a_offhi == 0) || DOINGSOFTDEP(vp) || (vp->v_type != VREG)) { error = ffs_full_fsync(vp, ap->a_flags); goto out; } bsize = vp->v_mount->mnt_stat.f_iosize; blk_high = ap->a_offhi / bsize; if (ap->a_offhi % bsize != 0) blk_high++; /* * First, flush all pages in range. */ mutex_enter(&vp->v_interlock); error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), round_page(ap->a_offhi), PGO_CLEANIT | ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0)); if (error) { goto out; } /* * Then, flush indirect blocks. */ if (blk_high >= NDADDR) { error = ufs_getlbns(vp, blk_high, ia, &num); if (error) goto out; mutex_enter(&bufcache_lock); for (i = 0; i < num; i++) { if ((bp = incore(vp, ia[i].in_lbn)) == NULL) continue; if ((bp->b_cflags & BC_BUSY) != 0 || (bp->b_oflags & BO_DELWRI) == 0) continue; bp->b_cflags |= BC_BUSY | BC_VFLUSH; mutex_exit(&bufcache_lock); bawrite(bp); mutex_enter(&bufcache_lock); } mutex_exit(&bufcache_lock); } if (ap->a_flags & FSYNC_WAIT) { mutex_enter(&vp->v_interlock); while (vp->v_numoutput > 0) cv_wait(&vp->v_cv, &vp->v_interlock); mutex_exit(&vp->v_interlock); } error = ffs_update(vp, NULL, NULL, ((ap->a_flags & (FSYNC_WAIT | FSYNC_DATAONLY)) == FSYNC_WAIT) ? UPDATE_WAIT : 0); if (error == 0 && ap->a_flags & FSYNC_CACHE) { int l = 0; VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &l, FWRITE, curlwp->l_cred); } out: fstrans_done(vp->v_mount); return error; } /* * Synch an open file. */ /* ARGSUSED */ int ffs_full_fsync(struct vnode *vp, int flags) { struct buf *bp, *nbp; int error, passes, skipmeta, inodedeps_only, waitfor; struct mount *mp; error = 0; if (vp->v_type == VBLK && vp->v_specmountpoint != NULL && (vp->v_specmountpoint->mnt_flag & MNT_SOFTDEP)) softdep_fsync_mountdev(vp); mutex_enter(&vp->v_interlock); inodedeps_only = DOINGSOFTDEP(vp) && (flags & FSYNC_RECLAIM) && UVM_OBJ_IS_CLEAN(&vp->v_uobj) && LIST_EMPTY(&vp->v_dirtyblkhd); /* * Flush all dirty data associated with a vnode. */ if (vp->v_type == VREG || vp->v_type == VBLK) { if ((flags & FSYNC_VFS) != 0) mp = vp->v_specmountpoint; else mp = vp->v_mount; error = VOP_PUTPAGES(vp, 0, 0, PGO_ALLPAGES | PGO_CLEANIT | ((flags & FSYNC_WAIT) ? PGO_SYNCIO : 0) | (fstrans_getstate(mp) == FSTRANS_SUSPENDING ? PGO_FREE : 0)); if (error) return error; } else mutex_exit(&vp->v_interlock); passes = NIADDR + 1; skipmeta = 0; if (flags & FSYNC_WAIT) skipmeta = 1; loop: mutex_enter(&bufcache_lock); LIST_FOREACH(bp, &vp->v_dirtyblkhd, b_vnbufs) { bp->b_cflags &= ~BC_SCANNED; } for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) { nbp = LIST_NEXT(bp, b_vnbufs); if (bp->b_cflags & (BC_BUSY | BC_SCANNED)) continue; if ((bp->b_oflags & BO_DELWRI) == 0) panic("ffs_fsync: not dirty"); if (skipmeta && bp->b_lblkno < 0) continue; bp->b_cflags |= BC_BUSY | BC_VFLUSH | BC_SCANNED; mutex_exit(&bufcache_lock); /* * On our final pass through, do all I/O synchronously * so that we can find out if our flush is failing * because of write errors. */ 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; if (vp->v_tag == VT_UFS) error = ffs_update(vp, NULL, NULL, waitfor); else { KASSERT(vp->v_type == VBLK); KASSERT((flags & FSYNC_VFS) != 0); } if (error == 0 && flags & FSYNC_CACHE) { int i = 0; if ((flags & FSYNC_VFS) == 0) vp = VTOI(vp)->i_devvp; VOP_IOCTL(vp, 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 vnlock *lkp; int flags = ap->a_flags; int result; if ((flags & LK_INTERLOCK) != 0) { mutex_exit(&vp->v_interlock); flags &= ~LK_INTERLOCK; } /* * Fake lock during file system suspension. */ if ((vp->v_type == VREG || vp->v_type == VDIR) && fstrans_is_owner(mp) && fstrans_getstate(mp) == FSTRANS_SUSPENDING) { return 0; } for (;;) { lkp = vp->v_vnlock; result = vlockmgr(lkp, flags); 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) vlockmgr(lkp, LK_RELEASE); } } /* * 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; KASSERT(ap->a_flags == 0); /* * Fake unlock during file system suspension. */ if ((vp->v_type == VREG || vp->v_type == VDIR) && fstrans_is_owner(mp) && fstrans_getstate(mp) == FSTRANS_SUSPENDING) { return 0; } return (vlockmgr(vp->v_vnlock, LK_RELEASE)); } /* * 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 (vlockstatus(vp->v_vnlock)); }