2003-11-14 20:54:10 +00:00
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/* $FreeBSD$ */
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/* $Id: nfs_vnops.c,v 1.45 2003/11/05 14:59:02 rees Exp $ */
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/*
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* copyright (c) 2003
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* the regents of the university of michigan
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* all rights reserved
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*
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* permission is granted to use, copy, create derivative works and redistribute
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* this software and such derivative works for any purpose, so long as the name
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* of the university of michigan is not used in any advertising or publicity
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* pertaining to the use or distribution of this software without specific,
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* written prior authorization. if the above copyright notice or any other
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* identification of the university of michigan is included in any copy of any
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* portion of this software, then the disclaimer below must also be included.
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*
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* this software is provided as is, without representation from the university
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* of michigan as to its fitness for any purpose, and without warranty by the
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* university of michigan of any kind, either express or implied, including
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* without limitation the implied warranties of merchantability and fitness for
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* a particular purpose. the regents of the university of michigan shall not be
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* liable for any damages, including special, indirect, incidental, or
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* consequential damages, with respect to any claim arising out of or in
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* connection with the use of the software, even if it has been or is hereafter
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* advised of the possibility of such damages.
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*/
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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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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* 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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* @(#)nfs_vnops.c 8.16 (Berkeley) 5/27/95
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* vnode op calls for Sun NFS version 2 and 3
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*/
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#include "opt_inet.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/resourcevar.h>
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#include <sys/proc.h>
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#include <sys/mount.h>
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#include <sys/bio.h>
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#include <sys/buf.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/namei.h>
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#include <sys/socket.h>
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#include <sys/vnode.h>
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#include <sys/dirent.h>
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#include <sys/fcntl.h>
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#include <sys/lockf.h>
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#include <sys/stat.h>
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#include <sys/sysctl.h>
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2004-02-27 19:37:43 +00:00
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#include <sys/lockmgr.h>
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2003-11-14 20:54:10 +00:00
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#include <vm/vm.h>
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#include <vm/vm_extern.h>
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#include <fs/fifofs/fifo.h>
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#include <rpc/rpcclnt.h>
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#include <nfs/rpcv2.h>
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#include <nfs/nfsproto.h>
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#include <nfsclient/nfs.h>
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#include <nfs4client/nfs4.h>
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#include <nfsclient/nfsnode.h>
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#include <nfsclient/nfsmount.h>
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#include <nfsclient/nfs_lock.h>
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#include <nfs/xdr_subs.h>
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#include <nfsclient/nfsm_subs.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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/* NFSv4 */
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#include <nfs4client/nfs4m_subs.h>
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#include <nfs4client/nfs4_vn.h>
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/* Defs */
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#define TRUE 1
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#define FALSE 0
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/*
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* Ifdef for FreeBSD-current merged buffer cache. It is unfortunate that these
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* calls are not in getblk() and brelse() so that they would not be necessary
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* here.
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*/
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#ifndef B_VMIO
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#define vfs_busy_pages(bp, f)
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#endif
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static int nfsspec_read(struct vop_read_args *);
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static int nfsspec_write(struct vop_write_args *);
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static int nfsfifo_read(struct vop_read_args *);
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static int nfsfifo_write(struct vop_write_args *);
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static int nfsspec_close(struct vop_close_args *);
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static int nfsfifo_close(struct vop_close_args *);
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static int nfs4_flush(struct vnode *, struct ucred *, int, struct thread *,
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int);
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static int nfs4_setattrrpc(struct vnode *, struct vattr *, struct ucred *,
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struct thread *);
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static int nfs4_closerpc(struct vnode *, struct ucred *, struct thread *, int);
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static int nfs4_lookup(struct vop_lookup_args *);
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static int nfs4_create(struct vop_create_args *);
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static int nfs4_mknod(struct vop_mknod_args *);
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static int nfs4_open(struct vop_open_args *);
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static int nfs4_close(struct vop_close_args *);
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static int nfs4_access(struct vop_access_args *);
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static int nfs4_getattr(struct vop_getattr_args *);
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static int nfs4_setattr(struct vop_setattr_args *);
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static int nfs4_read(struct vop_read_args *);
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static int nfs4_fsync(struct vop_fsync_args *);
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static int nfs4_remove(struct vop_remove_args *);
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static int nfs4_link(struct vop_link_args *);
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static int nfs4_rename(struct vop_rename_args *);
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static int nfs4_mkdir(struct vop_mkdir_args *);
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static int nfs4_rmdir(struct vop_rmdir_args *);
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static int nfs4_symlink(struct vop_symlink_args *);
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static int nfs4_readdir(struct vop_readdir_args *);
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static int nfs4_strategy(struct vop_strategy_args *);
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static int nfs4_lookitup(struct vnode *, const char *, int,
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struct ucred *, struct thread *, struct nfsnode **);
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static int nfs4_sillyrename(struct vnode *, struct vnode *,
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struct componentname *);
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static int nfsspec_access(struct vop_access_args *);
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static int nfs4_readlink(struct vop_readlink_args *);
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static int nfs4_print(struct vop_print_args *);
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static int nfs4_advlock(struct vop_advlock_args *);
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/*
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* Global vfs data structures for nfs
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*/
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vop_t **nfs4_vnodeop_p;
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static struct vnodeopv_entry_desc nfs4_vnodeop_entries[] = {
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{ &vop_default_desc, (vop_t *) vop_defaultop },
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{ &vop_access_desc, (vop_t *) nfs4_access },
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{ &vop_advlock_desc, (vop_t *) nfs4_advlock },
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{ &vop_close_desc, (vop_t *) nfs4_close },
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{ &vop_create_desc, (vop_t *) nfs4_create },
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{ &vop_fsync_desc, (vop_t *) nfs4_fsync },
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{ &vop_getattr_desc, (vop_t *) nfs4_getattr },
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{ &vop_getpages_desc, (vop_t *) nfs_getpages },
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{ &vop_putpages_desc, (vop_t *) nfs_putpages },
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{ &vop_inactive_desc, (vop_t *) nfs_inactive },
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{ &vop_lease_desc, (vop_t *) vop_null },
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{ &vop_link_desc, (vop_t *) nfs4_link },
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{ &vop_lookup_desc, (vop_t *) nfs4_lookup },
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{ &vop_mkdir_desc, (vop_t *) nfs4_mkdir },
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{ &vop_mknod_desc, (vop_t *) nfs4_mknod },
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{ &vop_open_desc, (vop_t *) nfs4_open },
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{ &vop_print_desc, (vop_t *) nfs4_print },
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{ &vop_read_desc, (vop_t *) nfs4_read },
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{ &vop_readdir_desc, (vop_t *) nfs4_readdir },
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{ &vop_readlink_desc, (vop_t *) nfs4_readlink },
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{ &vop_reclaim_desc, (vop_t *) nfs_reclaim },
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{ &vop_remove_desc, (vop_t *) nfs4_remove },
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{ &vop_rename_desc, (vop_t *) nfs4_rename },
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{ &vop_rmdir_desc, (vop_t *) nfs4_rmdir },
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{ &vop_setattr_desc, (vop_t *) nfs4_setattr },
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{ &vop_strategy_desc, (vop_t *) nfs4_strategy },
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{ &vop_symlink_desc, (vop_t *) nfs4_symlink },
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{ &vop_write_desc, (vop_t *) nfs_write },
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{ NULL, NULL }
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};
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static struct vnodeopv_desc nfs4_vnodeop_opv_desc =
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{ &nfs4_vnodeop_p, nfs4_vnodeop_entries };
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VNODEOP_SET(nfs4_vnodeop_opv_desc);
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/*
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* Special device vnode ops
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*/
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vop_t **spec_nfs4nodeop_p;
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static struct vnodeopv_entry_desc nfs4_specop_entries[] = {
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{ &vop_default_desc, (vop_t *) spec_vnoperate },
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{ &vop_access_desc, (vop_t *) nfsspec_access },
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{ &vop_close_desc, (vop_t *) nfsspec_close },
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{ &vop_fsync_desc, (vop_t *) nfs4_fsync },
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{ &vop_getattr_desc, (vop_t *) nfs4_getattr },
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{ &vop_inactive_desc, (vop_t *) nfs_inactive },
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{ &vop_print_desc, (vop_t *) nfs4_print },
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{ &vop_read_desc, (vop_t *) nfsspec_read },
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{ &vop_reclaim_desc, (vop_t *) nfs_reclaim },
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{ &vop_setattr_desc, (vop_t *) nfs4_setattr },
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{ &vop_write_desc, (vop_t *) nfsspec_write },
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{ NULL, NULL }
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};
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static struct vnodeopv_desc spec_nfs4nodeop_opv_desc =
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{ &spec_nfs4nodeop_p, nfs4_specop_entries };
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VNODEOP_SET(spec_nfs4nodeop_opv_desc);
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vop_t **fifo_nfs4nodeop_p;
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static struct vnodeopv_entry_desc nfs4_fifoop_entries[] = {
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{ &vop_default_desc, (vop_t *) fifo_vnoperate },
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{ &vop_access_desc, (vop_t *) nfsspec_access },
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{ &vop_close_desc, (vop_t *) nfsfifo_close },
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{ &vop_fsync_desc, (vop_t *) nfs4_fsync },
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{ &vop_getattr_desc, (vop_t *) nfs4_getattr },
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{ &vop_inactive_desc, (vop_t *) nfs_inactive },
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{ &vop_print_desc, (vop_t *) nfs4_print },
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{ &vop_read_desc, (vop_t *) nfsfifo_read },
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{ &vop_reclaim_desc, (vop_t *) nfs_reclaim },
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{ &vop_setattr_desc, (vop_t *) nfs4_setattr },
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{ &vop_write_desc, (vop_t *) nfsfifo_write },
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{ NULL, NULL }
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};
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static struct vnodeopv_desc fifo_nfs4nodeop_opv_desc =
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{ &fifo_nfs4nodeop_p, nfs4_fifoop_entries };
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VNODEOP_SET(fifo_nfs4nodeop_opv_desc);
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static int nfs4_removerpc(struct vnode *dvp, const char *name, int namelen,
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struct ucred *cred, struct thread *td);
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static int nfs4_renamerpc(struct vnode *fdvp, const char *fnameptr,
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int fnamelen, struct vnode *tdvp,
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const char *tnameptr, int tnamelen,
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struct ucred *cred, struct thread *td);
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static int nfs4_renameit(struct vnode *sdvp, struct componentname *scnp,
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struct sillyrename *sp);
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static int nfs4_openrpc(struct vnode *, struct vnode **,
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struct componentname *, int, struct vattr *);
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static int nfs4_open_confirm(struct vnode *vp, struct nfs4_compound *cpp,
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struct nfs4_oparg_open *openap,
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struct nfs4_oparg_getfh *gfh,
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struct ucred *cred, struct thread *td);
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static int nfs4_createrpc(struct vnode *, struct vnode **,
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struct componentname *, nfstype,
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struct vattr *, char *);
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/*
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* Global variables
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*/
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struct nfs4_lowner nfs4_masterlowner;
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#define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1))
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SYSCTL_DECL(_vfs_nfs4);
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static int nfsaccess_cache_timeout = NFS_MAXATTRTIMO;
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SYSCTL_INT(_vfs_nfs4, OID_AUTO, access_cache_timeout, CTLFLAG_RW,
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&nfsaccess_cache_timeout, 0, "NFS ACCESS cache timeout");
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static int nfsv3_commit_on_close = 0;
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SYSCTL_INT(_vfs_nfs4, OID_AUTO, nfsv3_commit_on_close, CTLFLAG_RW,
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&nfsv3_commit_on_close, 0, "write+commit on close, else only write");
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#if 0
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SYSCTL_INT(_vfs_nfs4, OID_AUTO, access_cache_hits, CTLFLAG_RD,
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&nfsstats.accesscache_hits, 0, "NFS ACCESS cache hit count");
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SYSCTL_INT(_vfs_nfs4, OID_AUTO, access_cache_misses, CTLFLAG_RD,
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&nfsstats.accesscache_misses, 0, "NFS ACCESS cache miss count");
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#endif
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#define NFSV3ACCESS_ALL (NFSV3ACCESS_READ | NFSV3ACCESS_MODIFY \
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| NFSV3ACCESS_EXTEND | NFSV3ACCESS_EXECUTE \
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| NFSV3ACCESS_DELETE | NFSV3ACCESS_LOOKUP)
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static int
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nfs3_access_otw(struct vnode *vp, int wmode, struct thread *td,
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struct ucred *cred)
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{
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const int v3 = 1;
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u_int32_t *tl;
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int error = 0, attrflag;
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return (0);
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struct mbuf *mreq, *mrep = NULL, *md, *mb;
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|
caddr_t bpos, dpos;
|
|
|
|
u_int32_t rmode;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
|
|
|
|
nfsstats.rpccnt[NFSPROC_ACCESS]++;
|
|
|
|
mreq = nfsm_reqhead(vp, NFSPROC_ACCESS, NFSX_FH(v3) + NFSX_UNSIGNED);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
nfsm_fhtom(vp, v3);
|
|
|
|
tl = nfsm_build(u_int32_t *, NFSX_UNSIGNED);
|
|
|
|
*tl = txdr_unsigned(wmode);
|
|
|
|
nfsm_request(vp, NFSPROC_ACCESS, td, cred);
|
|
|
|
nfsm_postop_attr(vp, attrflag);
|
|
|
|
if (!error) {
|
|
|
|
tl = nfsm_dissect(u_int32_t *, NFSX_UNSIGNED);
|
|
|
|
rmode = fxdr_unsigned(u_int32_t, *tl);
|
|
|
|
np->n_mode = rmode;
|
|
|
|
np->n_modeuid = cred->cr_uid;
|
|
|
|
np->n_modestamp = time_second;
|
|
|
|
}
|
|
|
|
m_freem(mrep);
|
|
|
|
nfsmout:
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs access vnode op.
|
|
|
|
* For nfs version 2, just return ok. File accesses may fail later.
|
|
|
|
* For nfs version 3, use the access rpc to check accessibility. If file modes
|
|
|
|
* are changed on the server, accesses might still fail later.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_access(struct vop_access_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
int error = 0;
|
|
|
|
u_int32_t mode, wmode;
|
|
|
|
int v3 = NFS_ISV3(vp); /* v3 \in v4 */
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
struct nfs4_oparg_access acc;
|
|
|
|
struct thread *td = ap->a_td;
|
|
|
|
struct ucred *cred = ap->a_cred;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Disallow write attempts on filesystems mounted read-only;
|
|
|
|
* unless the file is a socket, fifo, or a block or character
|
|
|
|
* device resident on the filesystem.
|
|
|
|
*/
|
|
|
|
if ((ap->a_mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) {
|
|
|
|
switch (vp->v_type) {
|
|
|
|
case VREG:
|
|
|
|
case VDIR:
|
|
|
|
case VLNK:
|
|
|
|
return (EROFS);
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* For nfs v3, check to see if we have done this recently, and if
|
|
|
|
* so return our cached result instead of making an ACCESS call.
|
|
|
|
* If not, do an access rpc, otherwise you are stuck emulating
|
|
|
|
* ufs_access() locally using the vattr. This may not be correct,
|
|
|
|
* since the server may apply other access criteria such as
|
|
|
|
* client uid-->server uid mapping that we do not know about.
|
|
|
|
*/
|
|
|
|
/* XXX Disable this for now; needs fixing of _access_otw() */
|
|
|
|
if (0 && v3) {
|
|
|
|
if (ap->a_mode & VREAD)
|
|
|
|
mode = NFSV3ACCESS_READ;
|
|
|
|
else
|
|
|
|
mode = 0;
|
|
|
|
if (vp->v_type != VDIR) {
|
|
|
|
if (ap->a_mode & VWRITE)
|
|
|
|
mode |= (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND);
|
|
|
|
if (ap->a_mode & VEXEC)
|
|
|
|
mode |= NFSV3ACCESS_EXECUTE;
|
|
|
|
} else {
|
|
|
|
if (ap->a_mode & VWRITE)
|
|
|
|
mode |= (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND |
|
|
|
|
NFSV3ACCESS_DELETE);
|
|
|
|
if (ap->a_mode & VEXEC)
|
|
|
|
mode |= NFSV3ACCESS_LOOKUP;
|
|
|
|
}
|
|
|
|
/* XXX safety belt, only make blanket request if caching */
|
|
|
|
if (nfsaccess_cache_timeout > 0) {
|
|
|
|
wmode = NFSV3ACCESS_READ | NFSV3ACCESS_MODIFY |
|
|
|
|
NFSV3ACCESS_EXTEND | NFSV3ACCESS_EXECUTE |
|
|
|
|
NFSV3ACCESS_DELETE | NFSV3ACCESS_LOOKUP;
|
|
|
|
} else {
|
|
|
|
wmode = mode;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Does our cached result allow us to give a definite yes to
|
|
|
|
* this request?
|
|
|
|
*/
|
|
|
|
if ((time_second < (np->n_modestamp + nfsaccess_cache_timeout)) &&
|
|
|
|
(ap->a_cred->cr_uid == np->n_modeuid) &&
|
|
|
|
((np->n_mode & mode) == mode)) {
|
|
|
|
nfsstats.accesscache_hits++;
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* Either a no, or a don't know. Go to the wire.
|
|
|
|
*/
|
|
|
|
nfsstats.accesscache_misses++;
|
|
|
|
error = nfs3_access_otw(vp, wmode, ap->a_td,ap->a_cred);
|
|
|
|
if (!error) {
|
|
|
|
if ((np->n_mode & mode) != mode) {
|
|
|
|
error = EACCES;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* XXX use generic access code here? */
|
|
|
|
mode = ap->a_mode & VREAD ? NFSV4ACCESS_READ : 0;
|
|
|
|
if (vp->v_type == VDIR) {
|
|
|
|
if (ap->a_mode & VWRITE)
|
|
|
|
mode |= NFSV4ACCESS_MODIFY | NFSV4ACCESS_EXTEND | NFSV4ACCESS_DELETE;
|
|
|
|
if (ap->a_mode & VEXEC)
|
|
|
|
mode |= NFSV4ACCESS_LOOKUP;
|
|
|
|
} else {
|
|
|
|
if (ap->a_mode & VWRITE)
|
|
|
|
mode |= NFSV4ACCESS_MODIFY | NFSV4ACCESS_EXTEND;
|
|
|
|
if (ap->a_mode & VEXEC)
|
|
|
|
mode |= NFSV4ACCESS_EXECUTE;
|
|
|
|
}
|
|
|
|
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
acc.mode = mode;
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_access()");
|
|
|
|
nfsm_v4build_putfh(&cp, vp);
|
|
|
|
nfsm_v4build_access(&cp, &acc);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(vp, NFSV4PROC_COMPOUND, td, cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_access(&cp, &acc);
|
|
|
|
|
|
|
|
if ((acc.rmode & mode) != mode)
|
|
|
|
error = EACCES;
|
|
|
|
|
|
|
|
nfsmout:
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
nfs4_openrpc(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp,
|
|
|
|
int flags, struct vattr *vap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = *vpp;
|
|
|
|
struct nfs4_oparg_getattr getattr;
|
|
|
|
struct nfs4_oparg_getfh getfh;
|
|
|
|
struct nfs4_oparg_open opena;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
int error = 0;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
struct ucred *cred = cnp->cn_cred;
|
|
|
|
struct thread *td = cnp->cn_thread;
|
|
|
|
struct nfs4_fctx xfc, *fcp;
|
|
|
|
struct nfsnode *np;
|
|
|
|
|
|
|
|
if (vp == NULL) {
|
|
|
|
/* Create a new file */
|
|
|
|
np = NULL;
|
|
|
|
fcp = &xfc;
|
|
|
|
bzero(fcp, sizeof(*fcp));
|
|
|
|
} else {
|
|
|
|
np = VTONFS(vp);
|
|
|
|
fcp = flags & FWRITE ? &np->n_wfc : &np->n_rfc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Since we are currently only one lockowner; we only open the
|
2004-02-27 19:37:43 +00:00
|
|
|
* file once each for reading and writing.
|
2003-11-14 20:54:10 +00:00
|
|
|
*/
|
|
|
|
if (fcp->refcnt++ != 0) {
|
|
|
|
*vpp = vp;
|
|
|
|
/*printf("not opening %s\n", np->n_name != NULL ? np->n_name : "");*/
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
fcp->lop = &nfs4_masterlowner;
|
|
|
|
fcp->np = np;
|
|
|
|
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
cp.nmp = VFSTONFS(dvp->v_mount);
|
|
|
|
|
|
|
|
opena.ctype = NCLNULL;
|
|
|
|
opena.flags = flags;
|
|
|
|
opena.vap = vap;
|
|
|
|
opena.fcp = fcp; /* For lockowner */
|
|
|
|
opena.cnp = cnp;
|
|
|
|
|
|
|
|
getattr.bm = &nfsv4_getattrbm;
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_openrpc()");
|
|
|
|
nfsm_v4build_putfh(&cp, dvp);
|
|
|
|
nfsm_v4build_open(&cp, &opena);
|
|
|
|
nfsm_v4build_getattr(&cp, &getattr);
|
|
|
|
nfsm_v4build_getfh(&cp, &getfh);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(vp != NULL ? vp : dvp, NFSV4PROC_COMPOUND, td, cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_open(&cp, &opena);
|
|
|
|
nfsm_v4dissect_getattr(&cp, &getattr);
|
|
|
|
nfsm_v4dissect_getfh(&cp, &getfh);
|
|
|
|
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
if (opena.rflags & NFSV4OPENRES_CONFIRM) {
|
|
|
|
error = nfs4_open_confirm(vp ? vp : dvp, &cp, &opena, &getfh, cred, td);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (vp == NULL) {
|
|
|
|
/* New file */
|
|
|
|
error = nfs_nget(dvp->v_mount, &getfh.fh_val,
|
|
|
|
getfh.fh_len, &np);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
vp = NFSTOV(np);
|
|
|
|
np->n_dvp = dvp;
|
|
|
|
np->n_namelen = cnp->cn_namelen; /* XXX memory leaks on these; track! */
|
|
|
|
if (np->n_name != NULL)
|
|
|
|
FREE(np->n_name, M_NFSREQ);
|
|
|
|
MALLOC(np->n_name, u_char *, np->n_namelen + 1, M_NFSREQ, M_WAITOK);
|
|
|
|
bcopy(cnp->cn_nameptr, np->n_name, np->n_namelen);
|
|
|
|
np->n_name[np->n_namelen] = '\0';
|
|
|
|
if (flags & FWRITE)
|
|
|
|
np->n_wfc = *fcp;
|
|
|
|
else
|
|
|
|
np->n_rfc = *fcp;
|
|
|
|
|
|
|
|
/*printf("opened new file %s\n", np->n_name);*/
|
|
|
|
|
|
|
|
nfs4_vnop_loadattrcache(vp, &getattr.fa, NULL);
|
|
|
|
*vpp = vp;
|
|
|
|
} else {
|
|
|
|
/*printf("openend \"old\" %s\n", np->n_name != NULL ? np->n_name : "");*/
|
|
|
|
|
|
|
|
if (flags & O_TRUNC && np->n_size != 0) {
|
|
|
|
struct vattr va;
|
|
|
|
|
|
|
|
VATTR_NULL(&va);
|
|
|
|
va.va_size = 0;
|
|
|
|
error = nfs4_setattrrpc(vp, &va,
|
|
|
|
cnp->cn_cred, cnp->cn_thread);
|
|
|
|
}
|
|
|
|
np->n_attrstamp = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
nfsmout:
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
nfs4_open_confirm(struct vnode *vp, struct nfs4_compound *cpp,
|
|
|
|
struct nfs4_oparg_open *openap, struct nfs4_oparg_getfh *gfh,
|
|
|
|
struct ucred *cred, struct thread *td)
|
|
|
|
{
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
int error = 0;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
|
|
|
|
nfs_v4initcompound(cpp);
|
|
|
|
cpp->nmp = VFSTONFS(vp->v_mount);
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(cpp, "nfs4_open_confirm()");
|
|
|
|
nfsm_v4build_putfh_nv(cpp, gfh);
|
|
|
|
nfsm_v4build_open_confirm(cpp, openap);
|
|
|
|
nfsm_v4build_finalize(cpp);
|
|
|
|
|
|
|
|
nfsm_request(vp, NFSV4PROC_COMPOUND, td, cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(cpp);
|
|
|
|
nfsm_v4dissect_putfh(cpp);
|
|
|
|
nfsm_v4dissect_open_confirm(cpp, openap);
|
|
|
|
|
|
|
|
nfsmout:
|
|
|
|
error = nfs_v4postop(cpp, error);
|
|
|
|
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs open vnode op
|
|
|
|
* Check to see if the type is ok
|
|
|
|
* and that deletion is not in progress.
|
|
|
|
* For paged in text files, you will need to flush the page cache
|
|
|
|
* if consistency is lost.
|
|
|
|
*/
|
|
|
|
/* ARGSUSED */
|
|
|
|
static int
|
|
|
|
nfs4_open(struct vop_open_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
enum vtype vtype = vp->v_type;
|
|
|
|
int mode = ap->a_mode;
|
|
|
|
struct componentname cn;
|
|
|
|
|
|
|
|
if (vtype != VREG) {
|
|
|
|
if (vtype != VDIR && vtype != VLNK) {
|
|
|
|
#ifdef DIAGNOSTIC
|
|
|
|
printf("open eacces vtyp=%d\n", vp->v_type);
|
|
|
|
#endif
|
|
|
|
return (EACCES);
|
|
|
|
} else
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (np->n_flag & NCREATED) {
|
|
|
|
np->n_flag &= ~NCREATED;
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
cn.cn_nameptr = np->n_name;
|
|
|
|
cn.cn_namelen = np->n_namelen;
|
|
|
|
cn.cn_cred = ap->a_cred;
|
|
|
|
cn.cn_thread = ap->a_td;
|
|
|
|
|
|
|
|
return (nfs4_openrpc(np->n_dvp, &vp, &cn, mode, NULL));
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
nfs4_closerpc(struct vnode *vp, struct ucred *cred, struct thread *td, int flags)
|
|
|
|
{
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
int error = 0;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
struct nfs4_fctx *fcp;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
|
|
|
|
fcp = flags & FWRITE ? &np->n_wfc : &np->n_rfc;
|
|
|
|
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
if (--fcp->refcnt != 0)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
/*printf("closing %s\n", np->n_name != NULL ? np->n_name : "");*/
|
|
|
|
|
|
|
|
cp.fcp = fcp;
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_closerpc()");
|
|
|
|
nfsm_v4build_putfh(&cp, vp);
|
|
|
|
nfsm_v4build_close(&cp, fcp);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(vp, NFSV4PROC_COMPOUND, td, cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_close(&cp, fcp);
|
|
|
|
|
|
|
|
nfsmout:
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs close vnode op
|
2004-02-27 19:37:43 +00:00
|
|
|
* play it safe for now (see comments in v2/v3 nfs_close regarding dirty buffers)
|
2003-11-14 20:54:10 +00:00
|
|
|
*/
|
|
|
|
/* ARGSUSED */
|
|
|
|
static int
|
|
|
|
nfs4_close(struct vop_close_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
int error = 0;
|
|
|
|
|
|
|
|
if (vp->v_type != VREG)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
if (np->n_flag & NMODIFIED) {
|
2004-02-27 19:37:43 +00:00
|
|
|
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, ap->a_td);
|
|
|
|
error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_td, 1);
|
|
|
|
VOP_UNLOCK(vp, 0, ap->a_td);
|
2003-11-14 20:54:10 +00:00
|
|
|
np->n_attrstamp = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
error = nfs4_closerpc(vp, ap->a_cred, ap->a_td, ap->a_fflag);
|
|
|
|
|
|
|
|
if (!error && np->n_flag & NWRITEERR) {
|
|
|
|
np->n_flag &= ~NWRITEERR;
|
|
|
|
error = np->n_error;
|
|
|
|
}
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs getattr call from vfs.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_getattr(struct vop_getattr_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
int error = 0;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
struct nfs4_oparg_getattr ga;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Update local times for special files.
|
|
|
|
*/
|
|
|
|
if (np->n_flag & (NACC | NUPD))
|
|
|
|
np->n_flag |= NCHG;
|
|
|
|
/*
|
|
|
|
* First look in the cache.
|
|
|
|
*/
|
|
|
|
if (nfs_getattrcache(vp, ap->a_vap) == 0)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
nfsstats.rpccnt[NFSPROC_GETATTR]++;
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, NFSX_FH(1));
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
ga.bm = &nfsv4_getattrbm;
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_getattr()");
|
|
|
|
nfsm_v4build_putfh(&cp, vp);
|
|
|
|
nfsm_v4build_getattr(&cp, &ga);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(vp, NFSV4PROC_COMPOUND, ap->a_td, ap->a_cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_getattr(&cp, &ga);
|
|
|
|
|
|
|
|
nfs4_vnop_loadattrcache(vp, &ga.fa, ap->a_vap);
|
|
|
|
|
|
|
|
nfsmout:
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs setattr call.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_setattr(struct vop_setattr_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
struct vattr *vap = ap->a_vap;
|
|
|
|
int error = 0;
|
|
|
|
u_quad_t tsize;
|
|
|
|
|
|
|
|
#ifndef nolint
|
|
|
|
tsize = (u_quad_t)0;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Setting of flags is not supported.
|
|
|
|
*/
|
|
|
|
if (vap->va_flags != VNOVAL)
|
|
|
|
return (EOPNOTSUPP);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Disallow write attempts if the filesystem is mounted read-only.
|
|
|
|
*/
|
|
|
|
if ((vap->va_flags != VNOVAL || vap->va_uid != (uid_t)VNOVAL ||
|
|
|
|
vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL ||
|
|
|
|
vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL) &&
|
|
|
|
(vp->v_mount->mnt_flag & MNT_RDONLY))
|
|
|
|
return (EROFS);
|
|
|
|
if (vap->va_size != VNOVAL) {
|
|
|
|
switch (vp->v_type) {
|
|
|
|
case VDIR:
|
|
|
|
return (EISDIR);
|
|
|
|
case VCHR:
|
|
|
|
case VBLK:
|
|
|
|
case VSOCK:
|
|
|
|
case VFIFO:
|
|
|
|
if (vap->va_mtime.tv_sec == VNOVAL &&
|
|
|
|
vap->va_atime.tv_sec == VNOVAL &&
|
|
|
|
vap->va_mode == (mode_t)VNOVAL &&
|
|
|
|
vap->va_uid == (uid_t)VNOVAL &&
|
|
|
|
vap->va_gid == (gid_t)VNOVAL)
|
|
|
|
return (0);
|
|
|
|
vap->va_size = VNOVAL;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/*
|
|
|
|
* Disallow write attempts if the filesystem is
|
|
|
|
* mounted read-only.
|
|
|
|
*/
|
|
|
|
if (vp->v_mount->mnt_flag & MNT_RDONLY)
|
|
|
|
return (EROFS);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We run vnode_pager_setsize() early (why?),
|
|
|
|
* we must set np->n_size now to avoid vinvalbuf
|
|
|
|
* V_SAVE races that might setsize a lower
|
|
|
|
* value.
|
|
|
|
*/
|
|
|
|
|
|
|
|
tsize = np->n_size;
|
|
|
|
error = nfs_meta_setsize(vp, ap->a_cred,
|
|
|
|
ap->a_td, vap->va_size);
|
|
|
|
|
|
|
|
if (np->n_flag & NMODIFIED) {
|
|
|
|
if (vap->va_size == 0)
|
|
|
|
error = nfs_vinvalbuf(vp, 0,
|
|
|
|
ap->a_cred, ap->a_td, 1);
|
|
|
|
else
|
|
|
|
error = nfs_vinvalbuf(vp, V_SAVE,
|
|
|
|
ap->a_cred, ap->a_td, 1);
|
|
|
|
if (error) {
|
|
|
|
vnode_pager_setsize(vp, np->n_size);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* np->n_size has already been set to vap->va_size
|
|
|
|
* in nfs_meta_setsize(). We must set it again since
|
|
|
|
* nfs_loadattrcache() could be called through
|
|
|
|
* nfs_meta_setsize() and could modify np->n_size.
|
|
|
|
*/
|
|
|
|
np->n_vattr.va_size = np->n_size = vap->va_size;
|
|
|
|
};
|
|
|
|
} else if ((vap->va_mtime.tv_sec != VNOVAL ||
|
|
|
|
vap->va_atime.tv_sec != VNOVAL) && (np->n_flag & NMODIFIED) &&
|
|
|
|
vp->v_type == VREG &&
|
|
|
|
(error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred,
|
|
|
|
ap->a_td, 1)) == EINTR)
|
|
|
|
return (error);
|
2004-02-27 19:37:43 +00:00
|
|
|
|
|
|
|
if (vap->va_size != VNOVAL && np->n_wfc.refcnt == 0) {
|
|
|
|
/* Have to open the file before we can truncate it */
|
|
|
|
struct componentname cn;
|
|
|
|
|
|
|
|
cn.cn_nameptr = np->n_name;
|
|
|
|
cn.cn_namelen = np->n_namelen;
|
|
|
|
cn.cn_cred = ap->a_cred;
|
|
|
|
cn.cn_thread = ap->a_td;
|
|
|
|
error = nfs4_openrpc(np->n_dvp, &vp, &cn, FWRITE, NULL);
|
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
np->n_flag |= NTRUNCATE;
|
|
|
|
}
|
|
|
|
|
2003-11-14 20:54:10 +00:00
|
|
|
error = nfs4_setattrrpc(vp, vap, ap->a_cred, ap->a_td);
|
|
|
|
if (error && vap->va_size != VNOVAL) {
|
|
|
|
np->n_size = np->n_vattr.va_size = tsize;
|
|
|
|
vnode_pager_setsize(vp, np->n_size);
|
|
|
|
}
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Do an nfs setattr rpc.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_setattrrpc(struct vnode *vp, struct vattr *vap, struct ucred *cred,
|
|
|
|
struct thread *td)
|
|
|
|
{
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
int error = 0;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
struct nfs4_oparg_getattr ga;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
2004-02-27 19:37:43 +00:00
|
|
|
struct nfs4_fctx *fcp;
|
2003-11-14 20:54:10 +00:00
|
|
|
|
|
|
|
nfsstats.rpccnt[NFSPROC_SETATTR]++;
|
|
|
|
mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
ga.bm = &nfsv4_getattrbm;
|
2004-02-27 19:37:43 +00:00
|
|
|
fcp = (vap->va_size != VNOVAL) ? &np->n_wfc : NULL;
|
2003-11-14 20:54:10 +00:00
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_setattrrpc");
|
|
|
|
nfsm_v4build_putfh(&cp, vp);
|
|
|
|
nfsm_v4build_setattr(&cp, vap, fcp);
|
|
|
|
nfsm_v4build_getattr(&cp, &ga);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(vp, NFSV4PROC_COMPOUND, td, cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_setattr(&cp);
|
|
|
|
nfsm_v4dissect_getattr(&cp, &ga);
|
|
|
|
|
|
|
|
nfs4_vnop_loadattrcache(vp, &ga.fa, NULL);
|
|
|
|
|
2004-02-27 19:37:43 +00:00
|
|
|
/* TODO: do the settatr and close in a single compound rpc */
|
2003-11-14 20:54:10 +00:00
|
|
|
if (np->n_flag & NTRUNCATE) {
|
|
|
|
error = nfs4_closerpc(vp, cred, td, FWRITE);
|
|
|
|
np->n_flag &= ~NTRUNCATE;
|
|
|
|
}
|
|
|
|
|
|
|
|
nfsmout:
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs lookup call, one step at a time...
|
|
|
|
* First look in cache
|
|
|
|
* If not found, unlock the directory nfsnode and do the rpc
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_lookup(struct vop_lookup_args *ap)
|
|
|
|
{
|
|
|
|
struct componentname *cnp = ap->a_cnp;
|
|
|
|
struct vnode *dvp = ap->a_dvp;
|
|
|
|
struct vnode **vpp = ap->a_vpp;
|
|
|
|
int isdot, flags = cnp->cn_flags;
|
|
|
|
struct vnode *newvp;
|
|
|
|
struct nfsmount *nmp;
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
long len;
|
|
|
|
nfsfh_t *fhp;
|
|
|
|
struct nfsnode *np;
|
|
|
|
int lockparent, wantparent, error = 0, fhsize;
|
|
|
|
struct thread *td = cnp->cn_thread;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
struct nfs4_oparg_getattr ga, dga;
|
|
|
|
struct nfs4_oparg_lookup l;
|
|
|
|
struct nfs4_oparg_getfh gfh;
|
|
|
|
|
|
|
|
*vpp = NULLVP;
|
|
|
|
cnp->cn_flags &= ~PDIRUNLOCK;
|
|
|
|
if ((flags & ISLASTCN) && (dvp->v_mount->mnt_flag & MNT_RDONLY) &&
|
|
|
|
(cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
|
|
|
|
return (EROFS);
|
|
|
|
if (dvp->v_type != VDIR)
|
|
|
|
return (ENOTDIR);
|
|
|
|
lockparent = flags & LOCKPARENT;
|
|
|
|
wantparent = flags & (LOCKPARENT|WANTPARENT);
|
|
|
|
nmp = VFSTONFS(dvp->v_mount);
|
|
|
|
np = VTONFS(dvp);
|
|
|
|
|
|
|
|
isdot = cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.';
|
|
|
|
|
|
|
|
if ((error = cache_lookup(dvp, vpp, cnp)) && error != ENOENT) {
|
|
|
|
struct vattr vattr;
|
|
|
|
int vpid;
|
|
|
|
|
|
|
|
if ((error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, td)) != 0) {
|
|
|
|
*vpp = NULLVP;
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
vhold(*vpp);
|
|
|
|
newvp = *vpp;
|
|
|
|
vpid = newvp->v_id;
|
|
|
|
/*
|
|
|
|
* See the comment starting `Step through' in ufs/ufs_lookup.c
|
|
|
|
* for an explanation of the locking protocol
|
|
|
|
*/
|
|
|
|
if (dvp == newvp) {
|
|
|
|
VREF(newvp);
|
|
|
|
error = 0;
|
|
|
|
} else if (flags & ISDOTDOT) {
|
|
|
|
VOP_UNLOCK(dvp, 0, td);
|
|
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
|
|
error = vget(newvp, LK_EXCLUSIVE, td);
|
|
|
|
if (!error && lockparent && (flags & ISLASTCN)) {
|
|
|
|
error = vn_lock(dvp, LK_EXCLUSIVE, td);
|
|
|
|
if (error == 0)
|
|
|
|
cnp->cn_flags &= ~PDIRUNLOCK;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
error = vget(newvp, LK_EXCLUSIVE, td);
|
|
|
|
if (!lockparent || error || !(flags & ISLASTCN)) {
|
|
|
|
VOP_UNLOCK(dvp, 0, td);
|
|
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (!error) {
|
|
|
|
if (vpid == newvp->v_id) {
|
|
|
|
if (!VOP_GETATTR(newvp, &vattr, cnp->cn_cred, td)
|
|
|
|
&& vattr.va_ctime.tv_sec == VTONFS(newvp)->n_ctime) {
|
|
|
|
nfsstats.lookupcache_hits++;
|
|
|
|
if (cnp->cn_nameiop != LOOKUP &&
|
|
|
|
(flags & ISLASTCN))
|
|
|
|
cnp->cn_flags |= SAVENAME;
|
|
|
|
vdrop(newvp);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
cache_purge(newvp);
|
|
|
|
}
|
|
|
|
vput(newvp);
|
|
|
|
if (lockparent && dvp != newvp && (flags & ISLASTCN))
|
|
|
|
VOP_UNLOCK(dvp, 0, td);
|
|
|
|
}
|
|
|
|
vdrop(newvp);
|
|
|
|
error = vn_lock(dvp, LK_EXCLUSIVE, td);
|
|
|
|
*vpp = NULLVP;
|
|
|
|
if (error) {
|
|
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
cnp->cn_flags &= ~PDIRUNLOCK;
|
|
|
|
}
|
|
|
|
|
|
|
|
error = 0;
|
|
|
|
newvp = NULLVP;
|
|
|
|
nfsstats.lookupcache_misses++;
|
|
|
|
nfsstats.rpccnt[NFSPROC_LOOKUP]++;
|
|
|
|
|
|
|
|
len = cnp->cn_namelen;
|
|
|
|
mreq = nfsm_reqhead(NULL, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
ga.bm = &nfsv4_getattrbm;
|
|
|
|
dga.bm = &nfsv4_getattrbm;
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_lookup()");
|
|
|
|
nfsm_v4build_putfh(&cp, dvp);
|
|
|
|
nfsm_v4build_getattr(&cp, &dga);
|
|
|
|
if (flags & ISDOTDOT)
|
|
|
|
nfsm_v4build_lookupp(&cp);
|
|
|
|
else if (!isdot) {
|
|
|
|
l.name = cnp->cn_nameptr;
|
|
|
|
l.namelen = len;
|
|
|
|
nfsm_v4build_lookup(&cp, &l);
|
|
|
|
}
|
|
|
|
nfsm_v4build_getattr(&cp, &ga);
|
|
|
|
nfsm_v4build_getfh(&cp, &gfh);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(dvp, NFSV4PROC_COMPOUND, cnp->cn_thread, cnp->cn_cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_getattr(&cp, &dga);
|
|
|
|
if (flags & ISDOTDOT)
|
|
|
|
nfsm_v4dissect_lookupp(&cp);
|
|
|
|
else if (!isdot)
|
|
|
|
nfsm_v4dissect_lookup(&cp);
|
|
|
|
nfsm_v4dissect_getattr(&cp, &ga);
|
|
|
|
nfsm_v4dissect_getfh(&cp, &gfh);
|
|
|
|
|
|
|
|
nfs4_vnop_loadattrcache(dvp, &dga.fa, NULL);
|
|
|
|
fhp = &gfh.fh_val;
|
|
|
|
fhsize = gfh.fh_len;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Handle RENAME case...
|
|
|
|
*/
|
|
|
|
if (cnp->cn_nameiop == RENAME && wantparent && (flags & ISLASTCN)) {
|
|
|
|
if (NFS_CMPFH(np, fhp, fhsize))
|
|
|
|
return (EISDIR);
|
|
|
|
|
|
|
|
error = nfs_nget(dvp->v_mount, fhp, fhsize, &np);
|
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
newvp = NFSTOV(np);
|
|
|
|
|
|
|
|
nfs4_vnop_loadattrcache(newvp, &ga.fa, NULL);
|
|
|
|
|
|
|
|
*vpp = newvp;
|
|
|
|
cnp->cn_flags |= SAVENAME;
|
|
|
|
if (!lockparent) {
|
|
|
|
VOP_UNLOCK(dvp, 0, td);
|
|
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (flags & ISDOTDOT) {
|
|
|
|
VOP_UNLOCK(dvp, 0, td);
|
|
|
|
|
|
|
|
error = nfs_nget(dvp->v_mount, fhp, fhsize, &np);
|
|
|
|
if (error) {
|
|
|
|
vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY, td);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
newvp = NFSTOV(np);
|
|
|
|
|
|
|
|
nfs4_vnop_loadattrcache(newvp, &ga.fa, NULL);
|
|
|
|
|
|
|
|
if (lockparent && (flags & ISLASTCN)) {
|
|
|
|
error = vn_lock(dvp, LK_EXCLUSIVE, td);
|
|
|
|
if (error) {
|
|
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
|
|
vput(newvp);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
} else
|
|
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
|
|
} else if (NFS_CMPFH(np, fhp, fhsize)) {
|
|
|
|
VREF(dvp);
|
|
|
|
newvp = dvp;
|
|
|
|
} else {
|
|
|
|
error = nfs_nget(dvp->v_mount, fhp, fhsize, &np);
|
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
if (!lockparent || !(flags & ISLASTCN)) {
|
|
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
|
|
VOP_UNLOCK(dvp, 0, td);
|
|
|
|
}
|
|
|
|
newvp = NFSTOV(np);
|
|
|
|
|
|
|
|
/* Fill in np used by open. */
|
|
|
|
np->n_dvp = dvp;
|
|
|
|
np->n_namelen = cnp->cn_namelen;
|
|
|
|
if (np->n_name != NULL)
|
|
|
|
FREE(np->n_name, M_NFSREQ);
|
|
|
|
MALLOC(np->n_name, u_char *, np->n_namelen + 1, M_NFSREQ, M_WAITOK);
|
|
|
|
bcopy(cnp->cn_nameptr, np->n_name, np->n_namelen);
|
|
|
|
np->n_name[np->n_namelen] = '\0';
|
|
|
|
|
|
|
|
nfs4_vnop_loadattrcache(newvp, &ga.fa, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
|
|
|
|
cnp->cn_flags |= SAVENAME;
|
|
|
|
if ((cnp->cn_flags & MAKEENTRY) &&
|
|
|
|
(cnp->cn_nameiop != DELETE || !(flags & ISLASTCN))) {
|
|
|
|
np->n_ctime = np->n_vattr.va_ctime.tv_sec;
|
|
|
|
cache_enter(dvp, newvp, cnp);
|
|
|
|
}
|
|
|
|
*vpp = newvp;
|
|
|
|
m_freem(mrep);
|
|
|
|
nfsmout:
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
if (error) {
|
|
|
|
if (newvp != NULLVP) {
|
|
|
|
vrele(newvp);
|
|
|
|
*vpp = NULLVP;
|
|
|
|
}
|
|
|
|
if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME) &&
|
|
|
|
(flags & ISLASTCN) && error == ENOENT) {
|
|
|
|
if (!lockparent) {
|
|
|
|
VOP_UNLOCK(dvp, 0, td);
|
|
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
|
|
}
|
|
|
|
if (dvp->v_mount->mnt_flag & MNT_RDONLY)
|
|
|
|
error = EROFS;
|
|
|
|
else
|
|
|
|
error = EJUSTRETURN;
|
|
|
|
}
|
|
|
|
if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
|
|
|
|
cnp->cn_flags |= SAVENAME;
|
|
|
|
}
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs read call.
|
|
|
|
* Just call nfs_bioread() to do the work.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_read(struct vop_read_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
|
|
|
|
switch (vp->v_type) {
|
|
|
|
case VREG:
|
|
|
|
return (nfs_bioread(vp, ap->a_uio, ap->a_ioflag, ap->a_cred));
|
|
|
|
case VDIR:
|
|
|
|
return (EISDIR);
|
|
|
|
default:
|
|
|
|
return (EOPNOTSUPP);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs readlink call
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_readlink(struct vop_readlink_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
|
|
|
|
if (vp->v_type != VLNK)
|
|
|
|
return (EINVAL);
|
|
|
|
return (nfs_bioread(vp, ap->a_uio, 0, ap->a_cred));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Do a readlink rpc.
|
|
|
|
* Called by nfs_doio() from below the buffer cache.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
nfs4_readlinkrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred)
|
|
|
|
{
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
int error = 0;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
|
|
|
|
nfsstats.rpccnt[NFSPROC_READLINK]++;
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_readlinkrpc()");
|
|
|
|
nfsm_v4build_putfh(&cp, vp);
|
|
|
|
nfsm_v4build_readlink(&cp);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(vp, NFSV4PROC_COMPOUND, uiop->uio_td, cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_readlink(&cp, uiop);
|
|
|
|
|
|
|
|
nfsmout:
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
if (m_freem != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs read rpc call
|
|
|
|
* Ditto above
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
nfs4_readrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred)
|
|
|
|
{
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
struct nfsmount *nmp;
|
|
|
|
int error = 0, len, tsiz;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
struct nfs4_oparg_read read;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
|
|
|
|
nmp = VFSTONFS(vp->v_mount);
|
|
|
|
tsiz = uiop->uio_resid;
|
|
|
|
if (uiop->uio_offset + tsiz > nmp->nm_maxfilesize)
|
|
|
|
return (EFBIG);
|
|
|
|
|
|
|
|
if (tsiz == 0)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
read.uiop = uiop;
|
|
|
|
read.fcp = np->n_rfc.refcnt > 0 ? &np->n_rfc : &np->n_wfc;
|
|
|
|
|
|
|
|
while (tsiz > 0) {
|
|
|
|
nfsstats.rpccnt[NFSPROC_READ]++;
|
|
|
|
len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz;
|
|
|
|
|
|
|
|
read.off = uiop->uio_offset;
|
|
|
|
read.maxcnt = len;
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_readrpc()");
|
|
|
|
nfsm_v4build_putfh(&cp, vp);
|
|
|
|
nfsm_v4build_read(&cp, &read);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(vp, NFSV4PROC_COMPOUND, uiop->uio_td, cred);
|
|
|
|
if (error != 0) {
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
goto nfsmout;
|
|
|
|
}
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_read(&cp, &read);
|
|
|
|
|
|
|
|
if (read.eof || read.retlen == 0)
|
|
|
|
tsiz = 0;
|
|
|
|
else
|
|
|
|
tsiz -= read.retlen;
|
|
|
|
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
m_freem(mrep);
|
|
|
|
mrep = NULL;
|
|
|
|
}
|
|
|
|
nfsmout:
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs write call
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
nfs4_writerpc(struct vnode *vp, struct uio *uiop, struct ucred *cred,
|
|
|
|
int *iomode, int *must_commit)
|
|
|
|
{
|
|
|
|
int32_t backup;
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
|
|
|
|
int error = 0, len, tsiz, wccflag = 1, rlen;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
struct nfs4_oparg_write write;
|
|
|
|
nfsv4stablehow commit, committed = NSHFILESYNC;
|
|
|
|
caddr_t verf;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
|
|
|
|
#ifndef DIAGNOSTIC
|
|
|
|
if (uiop->uio_iovcnt != 1)
|
|
|
|
panic("nfs: writerpc iovcnt > 1");
|
|
|
|
#endif
|
|
|
|
*must_commit = 0;
|
|
|
|
tsiz = uiop->uio_resid;
|
|
|
|
if (uiop->uio_offset + tsiz > nmp->nm_maxfilesize)
|
|
|
|
return (EFBIG);
|
|
|
|
|
|
|
|
if (tsiz == 0)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
write.stable = (nfsv4stablehow)*iomode;
|
|
|
|
write.uiop = uiop;
|
|
|
|
write.fcp = &np->n_wfc;
|
|
|
|
|
|
|
|
while (tsiz > 0) {
|
|
|
|
nfsstats.rpccnt[NFSPROC_WRITE]++;
|
|
|
|
len = (tsiz > nmp->nm_wsize) ? nmp->nm_wsize : tsiz;
|
|
|
|
|
|
|
|
write.off = uiop->uio_offset;
|
|
|
|
write.cnt = len;
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_writerpc()");
|
|
|
|
nfsm_v4build_putfh(&cp, vp);
|
|
|
|
nfsm_v4build_write(&cp, &write);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(vp, NFSV4PROC_COMPOUND, uiop->uio_td, cred);
|
|
|
|
if (error != 0) {
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
goto nfsmout;
|
|
|
|
}
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_write(&cp, &write);
|
|
|
|
|
|
|
|
rlen = write.retlen;
|
|
|
|
if (rlen == 0) {
|
|
|
|
error = NFSERR_IO;
|
|
|
|
break;
|
|
|
|
} else if (rlen < len) {
|
|
|
|
backup = len - rlen;
|
2004-07-28 06:59:55 +00:00
|
|
|
uiop->uio_iov->iov_base =
|
|
|
|
(char *)uiop->uio_iov->iov_base - backup;
|
2003-11-14 20:54:10 +00:00
|
|
|
uiop->uio_iov->iov_len += backup;
|
|
|
|
uiop->uio_offset -= backup;
|
|
|
|
uiop->uio_resid += backup;
|
|
|
|
len = rlen;
|
|
|
|
}
|
|
|
|
|
|
|
|
commit = write.committed;
|
|
|
|
|
|
|
|
if (committed == NSHFILESYNC ||
|
|
|
|
(committed = NSHDATASYNC && commit == NSHUNSTABLE))
|
|
|
|
committed = commit;
|
|
|
|
|
|
|
|
verf = (caddr_t)write.wverf;
|
|
|
|
|
|
|
|
if ((nmp->nm_flag & NFSSTA_HASWRITEVERF) == 0) {
|
|
|
|
bcopy(verf, nmp->nm_verf, NFSX_V4VERF);
|
|
|
|
nmp->nm_flag |= NFSMNT_HASWRITEVERF;
|
|
|
|
} else if (bcmp(verf, nmp->nm_verf, NFSX_V4VERF)) {
|
|
|
|
*must_commit = 1;
|
|
|
|
bcopy(verf, nmp->nm_verf, NFSX_V4VERF);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* XXX wccflag */
|
|
|
|
if (wccflag)
|
|
|
|
VTONFS(vp)->n_mtime = VTONFS(vp)->n_vattr.va_mtime.tv_sec;
|
|
|
|
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
m_freem(mrep);
|
|
|
|
mrep = NULL;
|
|
|
|
if (error)
|
|
|
|
break;
|
|
|
|
tsiz -= len;
|
|
|
|
}
|
|
|
|
nfsmout:
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
*iomode = committed;
|
|
|
|
if (error)
|
|
|
|
uiop->uio_resid = tsiz;
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* ARGSUSED */
|
|
|
|
static int
|
|
|
|
nfs4_mknod(struct vop_mknod_args *ap)
|
|
|
|
{
|
|
|
|
struct vattr *vap = ap->a_vap;
|
|
|
|
struct vnode *newvp = NULL;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
error = nfs4_createrpc(ap->a_dvp, &newvp,
|
|
|
|
ap->a_cnp, (nfstype)vap->va_type, vap, NULL);
|
|
|
|
|
|
|
|
/* XXX - is this actually referenced here? */
|
|
|
|
if (error == 0) {
|
|
|
|
*ap->a_vpp = newvp;
|
|
|
|
vrele(newvp);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
nfs4_createrpc(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp,
|
|
|
|
nfstype ftype, struct vattr *vap, char *linktarget)
|
|
|
|
{
|
|
|
|
struct nfsnode *dnp = VTONFS(dvp);
|
|
|
|
struct nfsnode *np = NULL;
|
|
|
|
struct vnode *newvp = NULL;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
struct nfs4_oparg_create c;
|
|
|
|
struct nfs4_oparg_getattr ga;
|
|
|
|
struct nfs4_oparg_getfh gfh;
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
int error = 0;
|
|
|
|
|
|
|
|
nfsstats.rpccnt[NFSPROC_CREATE]++;
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(dvp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
bzero(&c, sizeof(c));
|
|
|
|
bzero(&ga, sizeof(ga));
|
|
|
|
|
|
|
|
c.type = ftype;
|
|
|
|
c.vap = vap;
|
|
|
|
c.linktext = linktarget;
|
|
|
|
c.name = cnp->cn_nameptr;
|
|
|
|
c.namelen = cnp->cn_namelen;
|
|
|
|
|
|
|
|
ga.bm = &nfsv4_getattrbm;
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_createrpc()");
|
|
|
|
nfsm_v4build_putfh(&cp, dvp);
|
|
|
|
nfsm_v4build_create(&cp, &c);
|
|
|
|
nfsm_v4build_getattr(&cp, &ga);
|
|
|
|
nfsm_v4build_getfh(&cp, &gfh);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(dvp, NFSV4PROC_COMPOUND, cnp->cn_thread, cnp->cn_cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_create(&cp, &c);
|
|
|
|
nfsm_v4dissect_getattr(&cp, &ga);
|
|
|
|
nfsm_v4dissect_getfh(&cp, &gfh);
|
|
|
|
|
|
|
|
error = nfs_nget(dvp->v_mount, &gfh.fh_val, gfh.fh_len, &np);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
newvp = NFSTOV(np);
|
|
|
|
nfs4_vnop_loadattrcache(newvp, &ga.fa, NULL);
|
|
|
|
|
|
|
|
if (cnp->cn_flags & MAKEENTRY)
|
|
|
|
cache_enter(dvp, newvp, cnp);
|
|
|
|
|
|
|
|
dnp->n_flag |= NMODIFIED;
|
|
|
|
dnp->n_attrstamp = 0;
|
|
|
|
|
|
|
|
nfsmout:
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
|
|
|
|
/* XXX */
|
|
|
|
/*FREE(cnp->cn_pnbuf, M_NAMEI);*/
|
|
|
|
if (error != 0 && newvp != NULL)
|
|
|
|
vrele(newvp);
|
|
|
|
else if (error == 0)
|
|
|
|
*vpp = newvp;
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
nfs4_renamerpc(struct vnode *fdvp, const char *fnameptr, int fnamelen,
|
|
|
|
struct vnode *tdvp, const char *tnameptr, int tnamelen,
|
|
|
|
struct ucred *cred, struct thread *td)
|
|
|
|
{
|
|
|
|
|
|
|
|
struct nfsnode *fnp = VTONFS(fdvp), *tnp = VTONFS(tdvp);
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
struct nfs4_oparg_rename r;
|
|
|
|
int error = 0;
|
|
|
|
|
|
|
|
nfsstats.rpccnt[NFSPROC_RENAME]++;
|
|
|
|
|
|
|
|
r.fname = fnameptr;
|
|
|
|
r.fnamelen = fnamelen;
|
|
|
|
r.tname = tnameptr;
|
|
|
|
r.tnamelen = tnamelen;
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(fdvp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_renamerpc()");
|
|
|
|
nfsm_v4build_putfh(&cp, fdvp);
|
|
|
|
nfsm_v4build_savefh(&cp);
|
|
|
|
nfsm_v4build_putfh(&cp, tdvp);
|
|
|
|
nfsm_v4build_rename(&cp, &r);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(fdvp, NFSV4PROC_COMPOUND, td, cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_savefh(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_rename(&cp);
|
|
|
|
|
|
|
|
/* XXX should this always be performed? */
|
|
|
|
fnp->n_flag |= NMODIFIED;
|
|
|
|
tnp->n_flag |= NMODIFIED;
|
|
|
|
fnp->n_attrstamp = tnp->n_attrstamp = 0;
|
|
|
|
|
|
|
|
nfsmout:
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs file create call
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_create(struct vop_create_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *dvp = ap->a_dvp;
|
|
|
|
struct vattr *vap = ap->a_vap;
|
|
|
|
struct nfsnode *dnp = VTONFS(dvp);
|
|
|
|
struct componentname *cnp = ap->a_cnp;
|
|
|
|
struct vnode *newvp = NULL;
|
|
|
|
int error = 0, fmode = (O_CREAT | FREAD | FWRITE);
|
|
|
|
struct vattr vattr;
|
|
|
|
|
|
|
|
if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred, cnp->cn_thread)) != 0)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
if (vap->va_vaflags & VA_EXCLUSIVE)
|
|
|
|
fmode |= O_EXCL;
|
|
|
|
|
|
|
|
error = nfs4_openrpc(dvp, &newvp, cnp, fmode, vap);
|
|
|
|
if (error != 0)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
VTONFS(newvp)->n_flag |= NCREATED;
|
|
|
|
|
|
|
|
if (cnp->cn_flags & MAKEENTRY)
|
|
|
|
cache_enter(dvp, newvp, cnp);
|
|
|
|
|
|
|
|
*ap->a_vpp = newvp;
|
|
|
|
|
|
|
|
dnp->n_flag |= NMODIFIED;
|
|
|
|
dnp->n_attrstamp = 0; /* XXX; wccflag */
|
|
|
|
|
|
|
|
out:
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs file remove call
|
|
|
|
* To try and make nfs semantics closer to ufs semantics, a file that has
|
|
|
|
* other processes using the vnode is renamed instead of removed and then
|
|
|
|
* removed later on the last close.
|
|
|
|
* - If v_usecount > 1
|
|
|
|
* If a rename is not already in the works
|
|
|
|
* call nfs4_sillyrename() to set it up
|
|
|
|
* else
|
|
|
|
* do the remove rpc
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_remove(struct vop_remove_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
struct vnode *dvp = ap->a_dvp;
|
|
|
|
struct componentname *cnp = ap->a_cnp;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
int error = 0;
|
|
|
|
struct vattr vattr;
|
|
|
|
|
|
|
|
#ifndef DIAGNOSTIC
|
|
|
|
if ((cnp->cn_flags & HASBUF) == 0)
|
|
|
|
panic("nfs4_remove: no name");
|
|
|
|
if (vrefcnt(vp) < 1)
|
|
|
|
panic("nfs4_remove: bad v_usecount");
|
|
|
|
#endif
|
|
|
|
if (vp->v_type == VDIR)
|
|
|
|
error = EPERM;
|
|
|
|
else if (vrefcnt(vp) == 1 || (np->n_sillyrename &&
|
|
|
|
VOP_GETATTR(vp, &vattr, cnp->cn_cred, cnp->cn_thread) == 0 &&
|
|
|
|
vattr.va_nlink > 1)) {
|
|
|
|
/*
|
|
|
|
* Purge the name cache so that the chance of a lookup for
|
|
|
|
* the name succeeding while the remove is in progress is
|
|
|
|
* minimized. Without node locking it can still happen, such
|
|
|
|
* that an I/O op returns ESTALE, but since you get this if
|
|
|
|
* another host removes the file..
|
|
|
|
*/
|
|
|
|
cache_purge(vp);
|
|
|
|
/*
|
|
|
|
* throw away biocache buffers, mainly to avoid
|
|
|
|
* unnecessary delayed writes later.
|
|
|
|
*/
|
|
|
|
error = nfs_vinvalbuf(vp, 0, cnp->cn_cred, cnp->cn_thread, 1);
|
|
|
|
/* Do the rpc */
|
|
|
|
if (error != EINTR)
|
|
|
|
error = nfs4_removerpc(dvp, cnp->cn_nameptr,
|
|
|
|
cnp->cn_namelen, cnp->cn_cred, cnp->cn_thread);
|
|
|
|
/*
|
|
|
|
* Kludge City: If the first reply to the remove rpc is lost..
|
|
|
|
* the reply to the retransmitted request will be ENOENT
|
|
|
|
* since the file was in fact removed
|
|
|
|
* Therefore, we cheat and return success.
|
|
|
|
*/
|
|
|
|
if (error == ENOENT)
|
|
|
|
error = 0;
|
|
|
|
} else if (!np->n_sillyrename)
|
|
|
|
error = nfs4_sillyrename(dvp, vp, cnp);
|
|
|
|
np->n_attrstamp = 0;
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs file remove rpc called from nfs_inactive
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
nfs4_removeit(struct sillyrename *sp)
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* Make sure that the directory vnode is still valid.
|
|
|
|
* XXX we should lock sp->s_dvp here.
|
|
|
|
*/
|
|
|
|
if (sp->s_dvp->v_type == VBAD)
|
|
|
|
return (0);
|
|
|
|
return (nfs4_removerpc(sp->s_dvp, sp->s_name, sp->s_namlen, sp->s_cred,
|
|
|
|
NULL));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Nfs remove rpc, called from nfs4_remove() and nfs4_removeit().
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_removerpc(struct vnode *dvp, const char *name, int namelen,
|
|
|
|
struct ucred *cred, struct thread *td)
|
|
|
|
{
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
int error = 0;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
|
|
|
|
nfsstats.rpccnt[NFSPROC_REMOVE]++;
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(dvp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_removerpc()");
|
|
|
|
nfsm_v4build_putfh(&cp, dvp);
|
|
|
|
nfsm_v4build_remove(&cp, name, namelen);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(dvp, NFSV4PROC_COMPOUND, td, cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_remove(&cp);
|
|
|
|
|
|
|
|
nfsmout:
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
|
|
|
|
VTONFS(dvp)->n_flag |= NMODIFIED;
|
|
|
|
VTONFS(dvp)->n_attrstamp = 0; /* XXX wccflag */
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs file rename call
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_rename(struct vop_rename_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *fvp = ap->a_fvp;
|
|
|
|
struct vnode *tvp = ap->a_tvp;
|
|
|
|
struct vnode *fdvp = ap->a_fdvp;
|
|
|
|
struct vnode *tdvp = ap->a_tdvp;
|
|
|
|
struct componentname *tcnp = ap->a_tcnp;
|
|
|
|
struct componentname *fcnp = ap->a_fcnp;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
#ifndef DIAGNOSTIC
|
|
|
|
if ((tcnp->cn_flags & HASBUF) == 0 ||
|
|
|
|
(fcnp->cn_flags & HASBUF) == 0)
|
|
|
|
panic("nfs4_rename: no name");
|
|
|
|
#endif
|
|
|
|
/* Check for cross-device rename */
|
|
|
|
if ((fvp->v_mount != tdvp->v_mount) ||
|
|
|
|
(tvp && (fvp->v_mount != tvp->v_mount))) {
|
|
|
|
error = EXDEV;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (fvp == tvp) {
|
|
|
|
printf("nfs4_rename: fvp == tvp (can't happen)\n");
|
|
|
|
error = 0;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
if ((error = vn_lock(fvp, LK_EXCLUSIVE, fcnp->cn_thread)) != 0)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We have to flush B_DELWRI data prior to renaming
|
|
|
|
* the file. If we don't, the delayed-write buffers
|
|
|
|
* can be flushed out later after the file has gone stale
|
|
|
|
* under NFSV3. NFSV2 does not have this problem because
|
|
|
|
* ( as far as I can tell ) it flushes dirty buffers more
|
|
|
|
* often.
|
|
|
|
*/
|
|
|
|
VOP_FSYNC(fvp, fcnp->cn_cred, MNT_WAIT, fcnp->cn_thread);
|
|
|
|
VOP_UNLOCK(fvp, 0, fcnp->cn_thread);
|
|
|
|
if (tvp)
|
|
|
|
VOP_FSYNC(tvp, tcnp->cn_cred, MNT_WAIT, tcnp->cn_thread);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the tvp exists and is in use, sillyrename it before doing the
|
|
|
|
* rename of the new file over it.
|
|
|
|
* XXX Can't sillyrename a directory.
|
|
|
|
*/
|
|
|
|
if (tvp && vrefcnt(tvp) > 1 && !VTONFS(tvp)->n_sillyrename &&
|
|
|
|
tvp->v_type != VDIR && !nfs4_sillyrename(tdvp, tvp, tcnp)) {
|
|
|
|
vput(tvp);
|
|
|
|
tvp = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
error = nfs4_renamerpc(fdvp, fcnp->cn_nameptr, fcnp->cn_namelen,
|
|
|
|
tdvp, tcnp->cn_nameptr, tcnp->cn_namelen, tcnp->cn_cred,
|
|
|
|
tcnp->cn_thread);
|
|
|
|
|
|
|
|
if (fvp->v_type == VDIR) {
|
|
|
|
if (tvp != NULL && tvp->v_type == VDIR)
|
|
|
|
cache_purge(tdvp);
|
|
|
|
cache_purge(fdvp);
|
|
|
|
}
|
|
|
|
|
|
|
|
out:
|
|
|
|
if (tdvp == tvp)
|
|
|
|
vrele(tdvp);
|
|
|
|
else
|
|
|
|
vput(tdvp);
|
|
|
|
if (tvp)
|
|
|
|
vput(tvp);
|
|
|
|
vrele(fdvp);
|
|
|
|
vrele(fvp);
|
|
|
|
/*
|
|
|
|
* Kludge: Map ENOENT => 0 assuming that it is a reply to a retry.
|
|
|
|
*/
|
|
|
|
if (error == ENOENT)
|
|
|
|
error = 0;
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs file rename rpc called from nfs4_remove() above
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_renameit(struct vnode *sdvp, struct componentname *scnp,
|
|
|
|
struct sillyrename *sp)
|
|
|
|
{
|
|
|
|
return (nfs4_renamerpc(sdvp, scnp->cn_nameptr, scnp->cn_namelen, sdvp,
|
|
|
|
sp->s_name, sp->s_namlen, scnp->cn_cred, scnp->cn_thread));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs hard link create call
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_link(struct vop_link_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
struct vnode *tdvp = ap->a_tdvp;
|
|
|
|
struct componentname *cnp = ap->a_cnp;
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
int error = 0;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
struct nfs4_oparg_link l;
|
|
|
|
|
|
|
|
if (vp->v_mount != tdvp->v_mount) {
|
|
|
|
return (EXDEV);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Push all writes to the server, so that the attribute cache
|
|
|
|
* doesn't get "out of sync" with the server.
|
|
|
|
* XXX There should be a better way!
|
|
|
|
*/
|
|
|
|
VOP_FSYNC(vp, cnp->cn_cred, MNT_WAIT, cnp->cn_thread);
|
|
|
|
|
|
|
|
nfsstats.rpccnt[NFSPROC_LINK]++;
|
|
|
|
|
|
|
|
l.name = cnp->cn_nameptr;
|
|
|
|
l.namelen = cnp->cn_namelen;
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_link()");
|
|
|
|
nfsm_v4build_putfh(&cp, vp);
|
|
|
|
nfsm_v4build_savefh(&cp);
|
|
|
|
nfsm_v4build_putfh(&cp, tdvp);
|
|
|
|
nfsm_v4build_link(&cp, &l);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(vp, NFSV4PROC_COMPOUND, cnp->cn_thread, cnp->cn_cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_savefh(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_link(&cp);
|
|
|
|
|
|
|
|
VTONFS(tdvp)->n_flag |= NMODIFIED;
|
|
|
|
VTONFS(vp)->n_attrstamp = 0;
|
|
|
|
VTONFS(tdvp)->n_attrstamp = 0;
|
|
|
|
|
|
|
|
nfsmout:
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs symbolic link create call
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_symlink(struct vop_symlink_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *dvp = ap->a_dvp;
|
|
|
|
int error = 0;
|
|
|
|
struct vnode *newvp = NULL;
|
|
|
|
|
|
|
|
nfsstats.rpccnt[NFSPROC_SYMLINK]++;
|
|
|
|
|
|
|
|
error = nfs4_createrpc(ap->a_dvp, &newvp, ap->a_cnp, NFLNK,
|
|
|
|
ap->a_vap, ap->a_target);
|
|
|
|
|
|
|
|
if (error != 0 && newvp != NULL)
|
|
|
|
vput(newvp);
|
|
|
|
else if (error == 0)
|
|
|
|
*ap->a_vpp = newvp;
|
|
|
|
|
|
|
|
VTONFS(dvp)->n_flag |= NMODIFIED;
|
|
|
|
VTONFS(dvp)->n_attrstamp = 0; /* XXX wccflags */
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs make dir call
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_mkdir(struct vop_mkdir_args *ap)
|
|
|
|
{
|
|
|
|
return (nfs4_createrpc(ap->a_dvp, ap->a_vpp, ap->a_cnp, NFDIR,
|
|
|
|
ap->a_vap, NULL));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs remove directory call
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_rmdir(struct vop_rmdir_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
struct vnode *dvp = ap->a_dvp;
|
|
|
|
struct nfsnode *dnp = VTONFS(dvp);
|
|
|
|
struct componentname *cnp = ap->a_cnp;
|
|
|
|
int error = 0;
|
|
|
|
|
|
|
|
if (dvp == vp)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
error = (nfs4_removerpc(dvp, cnp->cn_nameptr, cnp->cn_namelen, cnp->cn_cred,
|
|
|
|
NULL));
|
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
dnp->n_flag |= NMODIFIED;
|
|
|
|
dnp->n_attrstamp = 0;
|
|
|
|
cache_purge(dvp);
|
|
|
|
cache_purge(vp);
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs readdir call
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_readdir(struct vop_readdir_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
struct uio *uio = ap->a_uio;
|
|
|
|
int tresid, error;
|
|
|
|
struct vattr vattr;
|
|
|
|
|
|
|
|
if (vp->v_type != VDIR)
|
|
|
|
return (EPERM);
|
|
|
|
/*
|
|
|
|
* First, check for hit on the EOF offset cache
|
|
|
|
*/
|
|
|
|
if (np->n_direofoffset > 0 && uio->uio_offset >= np->n_direofoffset &&
|
|
|
|
(np->n_flag & NMODIFIED) == 0) {
|
|
|
|
if (VOP_GETATTR(vp, &vattr, ap->a_cred, uio->uio_td) == 0 &&
|
|
|
|
np->n_mtime == vattr.va_mtime.tv_sec) {
|
|
|
|
nfsstats.direofcache_hits++;
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Call nfs_bioread() to do the real work.
|
|
|
|
*/
|
|
|
|
tresid = uio->uio_resid;
|
|
|
|
error = nfs_bioread(vp, uio, 0, ap->a_cred);
|
|
|
|
|
|
|
|
if (!error && uio->uio_resid == tresid)
|
|
|
|
nfsstats.direofcache_misses++;
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
static u_char fty_to_dty[] = {
|
|
|
|
DT_UNKNOWN, /* NFNON */
|
|
|
|
DT_REG, /* NFREG */
|
|
|
|
DT_DIR, /* NFDIR */
|
|
|
|
DT_BLK, /* NFBLK */
|
|
|
|
DT_CHR, /* NFCHR */
|
|
|
|
DT_LNK, /* NFLNK */
|
|
|
|
DT_SOCK, /* NFSOCK */
|
|
|
|
DT_FIFO, /* NFFIFO */
|
|
|
|
DT_UNKNOWN, /* NFATTRDIT */
|
|
|
|
DT_UNKNOWN, /* NFNAMEDATTR */
|
|
|
|
DT_UNKNOWN, /* NFBAD */
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Readdir rpc call.
|
|
|
|
* Called from below the buffer cache by nfs_doio().
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
nfs4_readdirrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred)
|
|
|
|
{
|
|
|
|
int len, left;
|
|
|
|
struct dirent *dp = NULL;
|
|
|
|
u_int32_t *tl;
|
|
|
|
caddr_t p;
|
|
|
|
uint64_t *cookiep;
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
uint64_t cookie;
|
|
|
|
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
|
|
|
|
struct nfsnode *dnp = VTONFS(vp);
|
|
|
|
int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
struct nfs4_oparg_readdir readdir;
|
|
|
|
struct nfsv4_fattr fattr;
|
|
|
|
u_int fty;
|
|
|
|
|
|
|
|
#ifndef DIAGNOSTIC
|
|
|
|
if (uiop->uio_iovcnt != 1 || (uiop->uio_offset & (DIRBLKSIZ - 1)) ||
|
|
|
|
(uiop->uio_resid & (DIRBLKSIZ - 1)))
|
|
|
|
panic("nfs readdirrpc bad uio");
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If there is no cookie, assume directory was stale.
|
|
|
|
*/
|
|
|
|
cookiep = nfs4_getcookie(dnp, uiop->uio_offset, 0);
|
|
|
|
if (cookiep)
|
|
|
|
cookie = *cookiep;
|
|
|
|
else
|
|
|
|
return (NFSERR_BAD_COOKIE);
|
|
|
|
|
|
|
|
/* Generate fake entries for "." and ".." */
|
|
|
|
while (cookie < 2 && bigenough) {
|
|
|
|
cookie++;
|
|
|
|
len = 4 + DIRHDSIZ;
|
|
|
|
|
|
|
|
if (len > uiop->uio_resid) {
|
|
|
|
bigenough = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
dp = (struct dirent *)uiop->uio_iov->iov_base;
|
|
|
|
|
|
|
|
dp->d_namlen = cookie;
|
|
|
|
dp->d_reclen = len;
|
|
|
|
dp->d_type = DT_DIR;
|
|
|
|
if (cookie == 1)
|
|
|
|
dp->d_fileno = dnp->n_vattr.va_fileid; /* XXX has problems with pynfs virtualhandles */
|
|
|
|
else
|
|
|
|
dp->d_fileno = dnp->n_dvp != NULL ?
|
|
|
|
VTONFS(dnp->n_dvp)->n_vattr.va_fileid : cookie;
|
|
|
|
|
|
|
|
p = dp->d_name;
|
|
|
|
*p++ = '.';
|
|
|
|
if (cookie == 2)
|
|
|
|
*p++ = '.';
|
|
|
|
*p = '\0';
|
|
|
|
|
|
|
|
blksiz += len;
|
|
|
|
if (blksiz == DIRBLKSIZ)
|
|
|
|
blksiz = 0;
|
|
|
|
uiop->uio_offset += len;
|
|
|
|
uiop->uio_resid -= len;
|
2004-07-28 06:59:55 +00:00
|
|
|
uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + len;
|
2003-11-14 20:54:10 +00:00
|
|
|
uiop->uio_iov->iov_len -= len;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cookie == 2)
|
|
|
|
cookie = 0;
|
|
|
|
|
|
|
|
/* This is sort of ugly, to prevent v4postop() from acting weird */
|
|
|
|
bzero(&cp, sizeof(cp));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Loop around doing readdir rpc's of size nm_readdirsize
|
|
|
|
* truncated to a multiple of DIRBLKSIZ.
|
|
|
|
* The stopping criteria is EOF or buffer full.
|
|
|
|
*/
|
|
|
|
/*
|
|
|
|
* XXX this is sort of ugly for nfsv4; we don't maintain the
|
|
|
|
* strict abstraction, but do the decoding inline. that's ok.
|
|
|
|
*/
|
|
|
|
while (more_dirs && bigenough) {
|
|
|
|
nfsstats.rpccnt[NFSPROC_READDIR]++;
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
readdir.cnt = nmp->nm_readdirsize;
|
|
|
|
readdir.cookie = cookie;
|
|
|
|
readdir.bm = &nfsv4_readdirbm;
|
|
|
|
if (cookie == 0)
|
|
|
|
bzero(&readdir.verf, sizeof(readdir.verf));
|
|
|
|
else
|
|
|
|
bcopy(&dnp->n_cookieverf, &readdir.verf,
|
|
|
|
sizeof(readdir.verf));
|
|
|
|
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_readdirrpc()");
|
|
|
|
nfsm_v4build_putfh(&cp, vp);
|
|
|
|
nfsm_v4build_readdir(&cp, &readdir);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(vp, NFSV4PROC_COMPOUND, uiop->uio_td, cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* XXX - Readdir gets handled inline like in
|
|
|
|
* NFSv{2,3}. This is a nasty inconsistency and
|
|
|
|
* should be fixed.
|
|
|
|
*/
|
|
|
|
|
|
|
|
tl = nfsm_dissect(uint32_t *, 5 * NFSX_UNSIGNED);
|
|
|
|
if (fxdr_unsigned(uint32_t, *tl++) != NFSV4OP_READDIR) {
|
|
|
|
error = EBADRPC;
|
|
|
|
goto nfsmout;
|
|
|
|
}
|
|
|
|
if (fxdr_unsigned(uint32_t, *tl++) != 0) {
|
|
|
|
error = EBADRPC;
|
|
|
|
goto nfsmout;
|
|
|
|
}
|
|
|
|
|
|
|
|
bcopy(tl, &dnp->n_cookieverf, NFSX_V4VERF);
|
|
|
|
tl += 2;
|
|
|
|
more_dirs = fxdr_unsigned(int, *tl++);
|
|
|
|
|
|
|
|
/* loop thru the dir entries, doctoring them to 4bsd form */
|
|
|
|
while (more_dirs && bigenough) {
|
|
|
|
tl = nfsm_dissect(uint32_t *, 3 * NFSX_UNSIGNED);
|
|
|
|
cookie = fxdr_hyper(tl);
|
|
|
|
tl += 2;
|
|
|
|
/* XXX cookie sanity check */
|
|
|
|
len = fxdr_unsigned(int, *tl++);
|
|
|
|
if (len <= 0 || len > NFS_MAXNAMLEN) {
|
|
|
|
error = EBADRPC;
|
|
|
|
goto nfsmout;
|
|
|
|
}
|
|
|
|
tlen = nfsm_rndup(len);
|
|
|
|
if (tlen == len)
|
|
|
|
tlen += 4; /* To ensure null termination */
|
|
|
|
left = DIRBLKSIZ - blksiz;
|
|
|
|
if ((tlen + DIRHDSIZ) > left) {
|
|
|
|
dp->d_reclen += left;
|
|
|
|
uiop->uio_iov->iov_base =
|
|
|
|
(char *)uiop->uio_iov->iov_base + left;
|
|
|
|
uiop->uio_iov->iov_len -= left;
|
|
|
|
uiop->uio_offset += left;
|
|
|
|
uiop->uio_resid -= left;
|
|
|
|
blksiz = 0;
|
|
|
|
}
|
|
|
|
if ((tlen + DIRHDSIZ) > uiop->uio_resid)
|
|
|
|
bigenough = 0;
|
|
|
|
if (bigenough) {
|
|
|
|
dp = (struct dirent *)uiop->uio_iov->iov_base;
|
|
|
|
|
|
|
|
dp->d_namlen = len;
|
|
|
|
dp->d_reclen = tlen + DIRHDSIZ;
|
|
|
|
|
|
|
|
blksiz += dp->d_reclen;
|
|
|
|
if (blksiz == DIRBLKSIZ)
|
|
|
|
blksiz = 0;
|
|
|
|
uiop->uio_offset += DIRHDSIZ;
|
|
|
|
uiop->uio_resid -= DIRHDSIZ;
|
|
|
|
uiop->uio_iov->iov_base =
|
|
|
|
(char *)uiop->uio_iov->iov_base + DIRHDSIZ;
|
|
|
|
uiop->uio_iov->iov_len -= DIRHDSIZ;
|
|
|
|
|
|
|
|
/* Copy name */
|
|
|
|
nfsm_mtouio(uiop, len);
|
|
|
|
p = uiop->uio_iov->iov_base;
|
|
|
|
tlen -= len;
|
|
|
|
*p = '\0'; /* null terminate */
|
|
|
|
/* printf("nfs4_readdirrpc: name: \"%s\" cookie %d\n",
|
|
|
|
p - len, (int) cookie);*/
|
|
|
|
uiop->uio_iov->iov_base =
|
|
|
|
(char *)uiop->uio_iov->iov_base + tlen;
|
|
|
|
uiop->uio_iov->iov_len -= tlen;
|
|
|
|
uiop->uio_offset += tlen;
|
|
|
|
uiop->uio_resid -= tlen;
|
|
|
|
|
|
|
|
/* Copy attributes */
|
|
|
|
nfsm_v4dissect_attrs(&fattr);
|
|
|
|
|
|
|
|
dp->d_fileno = nfs_v4fileid4_to_fileid(
|
|
|
|
fattr.fa4_valid & FA4V_FILEID &&
|
|
|
|
fattr.fa4_fileid ?
|
|
|
|
fattr.fa4_fileid : cookie);
|
|
|
|
|
|
|
|
fty = (u_int)fattr.fa4_type;
|
|
|
|
dp->d_type = fattr.fa4_valid & FA4V_TYPE &&
|
|
|
|
(fty < sizeof(fty_to_dty)) ?
|
|
|
|
fty_to_dty[fty] : DT_UNKNOWN;
|
|
|
|
} else
|
|
|
|
nfsm_adv(nfsm_rndup(len));
|
|
|
|
|
|
|
|
tl = nfsm_dissect(uint32_t *, NFSX_UNSIGNED);
|
|
|
|
more_dirs = fxdr_unsigned(int, *tl++);
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* If at end of rpc data, get the eof boolean
|
|
|
|
*/
|
|
|
|
if (!more_dirs) {
|
|
|
|
tl = nfsm_dissect(u_int32_t *, NFSX_UNSIGNED);
|
|
|
|
more_dirs = (fxdr_unsigned(int, *tl) == 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
m_freem(mrep);
|
|
|
|
mrep = NULL;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Fill last record, iff any, out to a multiple of DIRBLKSIZ
|
|
|
|
* by increasing d_reclen for the last record.
|
|
|
|
*/
|
|
|
|
if (blksiz > 0) {
|
|
|
|
left = DIRBLKSIZ - blksiz;
|
|
|
|
dp->d_reclen += left;
|
|
|
|
uiop->uio_iov->iov_base =
|
|
|
|
(char *)uiop->uio_iov->iov_base + left;
|
|
|
|
uiop->uio_iov->iov_len -= left;
|
|
|
|
uiop->uio_offset += left;
|
|
|
|
uiop->uio_resid -= left;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We are now either at the end of the directory or have filled the
|
|
|
|
* block.
|
|
|
|
*/
|
|
|
|
if (bigenough)
|
|
|
|
dnp->n_direofoffset = uiop->uio_offset;
|
|
|
|
else {
|
|
|
|
if (uiop->uio_resid > 0)
|
|
|
|
printf("EEK! readdirrpc resid > 0\n");
|
|
|
|
cookiep = nfs4_getcookie(dnp, uiop->uio_offset, 1);
|
|
|
|
*cookiep = cookie;
|
|
|
|
}
|
|
|
|
nfsmout:
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Silly rename. To make the NFS filesystem that is stateless look a little
|
|
|
|
* more like the "ufs" a remove of an active vnode is translated to a rename
|
|
|
|
* to a funny looking filename that is removed by nfs_inactive on the
|
|
|
|
* nfsnode. There is the potential for another process on a different client
|
|
|
|
* to create the same funny name between the nfs_lookitup() fails and the
|
|
|
|
* nfs_rename() completes, but...
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_sillyrename(struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
|
|
|
|
{
|
|
|
|
struct sillyrename *sp;
|
|
|
|
struct nfsnode *np;
|
|
|
|
int error;
|
|
|
|
short pid;
|
|
|
|
|
|
|
|
cache_purge(dvp);
|
|
|
|
np = VTONFS(vp);
|
|
|
|
#ifndef DIAGNOSTIC
|
|
|
|
if (vp->v_type == VDIR)
|
|
|
|
panic("nfs: sillyrename dir");
|
|
|
|
#endif
|
|
|
|
MALLOC(sp, struct sillyrename *, sizeof (struct sillyrename),
|
|
|
|
M_NFSREQ, M_WAITOK);
|
|
|
|
sp->s_cred = crhold(cnp->cn_cred);
|
|
|
|
sp->s_dvp = dvp;
|
|
|
|
sp->s_removeit = nfs4_removeit;
|
|
|
|
VREF(dvp);
|
|
|
|
|
|
|
|
/* Fudge together a funny name */
|
|
|
|
pid = cnp->cn_thread->td_proc->p_pid;
|
|
|
|
sp->s_namlen = sprintf(sp->s_name, ".nfsA%04x4.4", pid);
|
|
|
|
|
|
|
|
/* Try lookitups until we get one that isn't there */
|
|
|
|
while (nfs4_lookitup(dvp, sp->s_name, sp->s_namlen, sp->s_cred,
|
|
|
|
cnp->cn_thread, NULL) == 0) {
|
|
|
|
sp->s_name[4]++;
|
|
|
|
if (sp->s_name[4] > 'z') {
|
|
|
|
error = EINVAL;
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
error = nfs4_renameit(dvp, cnp, sp);
|
|
|
|
if (error)
|
|
|
|
goto bad;
|
|
|
|
error = nfs4_lookitup(dvp, sp->s_name, sp->s_namlen, sp->s_cred,
|
|
|
|
cnp->cn_thread, &np);
|
|
|
|
np->n_sillyrename = sp;
|
|
|
|
return (0);
|
|
|
|
bad:
|
|
|
|
vrele(sp->s_dvp);
|
|
|
|
crfree(sp->s_cred);
|
|
|
|
free((caddr_t)sp, M_NFSREQ);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Look up a file name and optionally either update the file handle or
|
|
|
|
* allocate an nfsnode, depending on the value of npp.
|
|
|
|
* npp == NULL --> just do the lookup
|
|
|
|
* *npp == NULL --> allocate a new nfsnode and make sure attributes are
|
|
|
|
* handled too
|
|
|
|
* *npp != NULL --> update the file handle in the vnode
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_lookitup(struct vnode *dvp, const char *name, int len, struct ucred *cred,
|
|
|
|
struct thread *td, struct nfsnode **npp)
|
|
|
|
{
|
|
|
|
struct vnode *newvp = NULL;
|
|
|
|
struct nfsnode *np, *dnp = VTONFS(dvp);
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
int error = 0, fhlen;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
nfsfh_t *nfhp;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
struct nfs4_oparg_lookup l;
|
|
|
|
struct nfs4_oparg_getfh gfh;
|
|
|
|
struct nfs4_oparg_getattr ga;
|
|
|
|
|
|
|
|
nfsstats.rpccnt[NFSPROC_RENAME]++;
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(dvp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
l.name = name;
|
|
|
|
l.namelen = len;
|
|
|
|
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
ga.bm = &nfsv4_getattrbm;
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_renamerpc()");
|
|
|
|
nfsm_v4build_putfh(&cp, dvp);
|
|
|
|
nfsm_v4build_lookup(&cp, &l);
|
|
|
|
nfsm_v4build_getfh(&cp, &gfh);
|
|
|
|
nfsm_v4build_getattr(&cp, &ga);
|
|
|
|
|
|
|
|
nfsm_request(dvp, NFSV4PROC_COMPOUND, td, cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_lookup(&cp);
|
|
|
|
nfsm_v4dissect_getfh(&cp, &gfh);
|
|
|
|
nfsm_v4dissect_getattr(&cp, &ga);
|
|
|
|
|
|
|
|
if (npp != NULL && error == 0) {
|
|
|
|
nfhp = &gfh.fh_val;
|
|
|
|
fhlen = gfh.fh_len;
|
|
|
|
|
|
|
|
if (*npp != NULL) {
|
|
|
|
np = *npp;
|
|
|
|
if (np->n_fhsize > NFS_SMALLFH && fhlen <= NFS_SMALLFH) {
|
|
|
|
free((caddr_t)np->n_fhp, M_NFSBIGFH);
|
|
|
|
np->n_fhp = &np->n_fh;
|
|
|
|
} else if (np->n_fhsize <= NFS_SMALLFH && fhlen>NFS_SMALLFH)
|
|
|
|
np->n_fhp =(nfsfh_t *)malloc(fhlen, M_NFSBIGFH, M_WAITOK);
|
|
|
|
bcopy((caddr_t)nfhp, (caddr_t)np->n_fhp, fhlen);
|
|
|
|
np->n_fhsize = fhlen;
|
|
|
|
newvp = NFSTOV(np);
|
|
|
|
} else if (NFS_CMPFH(dnp, nfhp, fhlen)) {
|
|
|
|
VREF(dvp);
|
|
|
|
newvp = dvp;
|
|
|
|
} else {
|
|
|
|
error = nfs_nget(dvp->v_mount, nfhp, fhlen, &np);
|
|
|
|
if (error) {
|
|
|
|
m_freem(mrep);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
newvp = NFSTOV(np);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (newvp != dvp) {
|
|
|
|
np->n_dvp = dvp;
|
|
|
|
np->n_namelen = len;
|
|
|
|
if (np->n_name != NULL)
|
|
|
|
FREE(np->n_name, M_NFSREQ);
|
|
|
|
MALLOC(np->n_name, u_char *,
|
|
|
|
np->n_namelen + 1, M_NFSREQ, M_WAITOK);
|
|
|
|
memcpy(np->n_name, name, len);
|
|
|
|
np->n_name[len] = '\0';
|
|
|
|
}
|
|
|
|
nfs4_vnop_loadattrcache(newvp, &ga.fa, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
nfsmout:
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
if (mrep != NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
if (npp && *npp == NULL) {
|
|
|
|
if (error) {
|
|
|
|
if (newvp) {
|
|
|
|
if (newvp == dvp)
|
|
|
|
vrele(newvp);
|
|
|
|
else
|
|
|
|
vput(newvp);
|
|
|
|
}
|
|
|
|
} else
|
|
|
|
*npp = np;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Nfs Version 3 commit rpc
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
nfs4_commit(struct vnode *vp, u_quad_t offset, int cnt, struct ucred *cred,
|
|
|
|
struct thread *td)
|
|
|
|
{
|
|
|
|
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
|
|
|
|
caddr_t bpos, dpos;
|
|
|
|
int error = 0;
|
|
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
|
|
struct nfs4_compound cp;
|
|
|
|
struct nfs4_oparg_commit commit;
|
|
|
|
|
|
|
|
if ((nmp->nm_state & NFSSTA_HASWRITEVERF) == 0)
|
|
|
|
return (0);
|
|
|
|
nfsstats.rpccnt[NFSPROC_COMMIT]++;
|
|
|
|
|
|
|
|
mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, 0);
|
|
|
|
mb = mreq;
|
|
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
|
|
|
|
commit.start = offset;
|
|
|
|
commit.len = cnt;
|
|
|
|
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_commit()");
|
|
|
|
nfsm_v4build_putfh(&cp, vp);
|
|
|
|
nfsm_v4build_commit(&cp, &commit);
|
|
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
|
|
|
|
nfsm_request(vp, NFSV4PROC_COMPOUND, td, cred);
|
|
|
|
if (error != 0)
|
|
|
|
goto nfsmout;
|
|
|
|
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
|
|
nfsm_v4dissect_putfh(&cp);
|
|
|
|
nfsm_v4dissect_commit(&cp, &commit);
|
|
|
|
|
|
|
|
/* XXX */
|
|
|
|
/* nfsm_wcc_data(vp, wccflag);*/
|
|
|
|
if (bcmp(nmp->nm_verf, commit.verf, NFSX_V4VERF)) {
|
|
|
|
bcopy(commit.verf, nmp->nm_verf, NFSX_V4VERF);
|
|
|
|
error = NFSERR_STALEWRITEVERF;
|
|
|
|
}
|
|
|
|
|
|
|
|
nfsmout:
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
|
|
|
|
if (mrep == NULL)
|
|
|
|
m_freem(mrep);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Strategy routine.
|
|
|
|
* For async requests when nfsiod(s) are running, queue the request by
|
|
|
|
* calling nfs_asyncio(), otherwise just all nfs_doio() to do the
|
|
|
|
* request.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_strategy(struct vop_strategy_args *ap)
|
|
|
|
{
|
|
|
|
struct buf *bp = ap->a_bp;
|
|
|
|
struct ucred *cr;
|
|
|
|
struct thread *td;
|
|
|
|
int error = 0;
|
|
|
|
|
|
|
|
KASSERT(ap->a_vp == ap->a_bp->b_vp, ("%s(%p != %p)",
|
|
|
|
__func__, ap->a_vp, ap->a_bp->b_vp));
|
|
|
|
KASSERT(!(bp->b_flags & B_DONE), ("nfs4_strategy: buffer %p unexpectedly marked B_DONE", bp));
|
|
|
|
KASSERT(BUF_REFCNT(bp) > 0, ("nfs4_strategy: buffer %p not locked", bp));
|
|
|
|
|
|
|
|
if (bp->b_flags & B_ASYNC)
|
|
|
|
td = NULL;
|
|
|
|
else
|
|
|
|
td = curthread; /* XXX */
|
|
|
|
|
|
|
|
if (bp->b_iocmd == BIO_READ)
|
|
|
|
cr = bp->b_rcred;
|
|
|
|
else
|
|
|
|
cr = bp->b_wcred;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the op is asynchronous and an i/o daemon is waiting
|
|
|
|
* queue the request, wake it up and wait for completion
|
|
|
|
* otherwise just do it ourselves.
|
|
|
|
*/
|
|
|
|
if ((bp->b_flags & B_ASYNC) == 0 ||
|
|
|
|
nfs_asyncio(bp, NOCRED, td))
|
|
|
|
error = nfs_doio(bp, cr, td);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* fsync vnode op. Just call nfs4_flush() with commit == 1.
|
|
|
|
*/
|
|
|
|
/* ARGSUSED */
|
|
|
|
static int
|
|
|
|
nfs4_fsync(struct vop_fsync_args *ap)
|
|
|
|
{
|
|
|
|
return (nfs4_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_td, 1));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Flush all the blocks associated with a vnode.
|
|
|
|
* Walk through the buffer pool and push any dirty pages
|
|
|
|
* associated with the vnode.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_flush(struct vnode *vp, struct ucred *cred, int waitfor, struct thread *td,
|
|
|
|
int commit)
|
|
|
|
{
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
struct buf *bp;
|
|
|
|
int i;
|
|
|
|
struct buf *nbp;
|
|
|
|
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
|
|
|
|
int s, error = 0, slptimeo = 0, slpflag = 0, retv, bvecpos;
|
|
|
|
int passone = 1;
|
|
|
|
u_quad_t off, endoff, toff;
|
|
|
|
struct ucred* wcred = NULL;
|
|
|
|
struct buf **bvec = NULL;
|
|
|
|
#ifndef NFS_COMMITBVECSIZ
|
|
|
|
#define NFS_COMMITBVECSIZ 20
|
|
|
|
#endif
|
|
|
|
struct buf *bvec_on_stack[NFS_COMMITBVECSIZ];
|
|
|
|
int bvecsize = 0, bveccount;
|
|
|
|
|
|
|
|
if (nmp->nm_flag & NFSMNT_INT)
|
|
|
|
slpflag = PCATCH;
|
|
|
|
if (!commit)
|
|
|
|
passone = 0;
|
|
|
|
/*
|
|
|
|
* A b_flags == (B_DELWRI | B_NEEDCOMMIT) block has been written to the
|
|
|
|
* server, but nas not been committed to stable storage on the server
|
|
|
|
* yet. On the first pass, the byte range is worked out and the commit
|
|
|
|
* rpc is done. On the second pass, nfs_writebp() is called to do the
|
|
|
|
* job.
|
|
|
|
*/
|
|
|
|
again:
|
|
|
|
off = (u_quad_t)-1;
|
|
|
|
endoff = 0;
|
|
|
|
bvecpos = 0;
|
|
|
|
if (NFS_ISV3(vp) && commit) {
|
|
|
|
s = splbio();
|
|
|
|
if (bvec != NULL && bvec != bvec_on_stack)
|
|
|
|
free(bvec, M_TEMP);
|
|
|
|
/*
|
|
|
|
* Count up how many buffers waiting for a commit.
|
|
|
|
*/
|
|
|
|
bveccount = 0;
|
|
|
|
VI_LOCK(vp);
|
|
|
|
for (bp = TAILQ_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) {
|
|
|
|
nbp = TAILQ_NEXT(bp, b_vnbufs);
|
|
|
|
if (BUF_REFCNT(bp) == 0 &&
|
|
|
|
(bp->b_flags & (B_DELWRI | B_NEEDCOMMIT))
|
|
|
|
== (B_DELWRI | B_NEEDCOMMIT))
|
|
|
|
bveccount++;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Allocate space to remember the list of bufs to commit. It is
|
|
|
|
* important to use M_NOWAIT here to avoid a race with nfs4_write.
|
|
|
|
* If we can't get memory (for whatever reason), we will end up
|
|
|
|
* committing the buffers one-by-one in the loop below.
|
|
|
|
*/
|
|
|
|
if (bveccount > NFS_COMMITBVECSIZ) {
|
|
|
|
/*
|
|
|
|
* Release the vnode interlock to avoid a lock
|
|
|
|
* order reversal.
|
|
|
|
*/
|
|
|
|
VI_UNLOCK(vp);
|
|
|
|
bvec = (struct buf **)
|
|
|
|
malloc(bveccount * sizeof(struct buf *),
|
|
|
|
M_TEMP, M_NOWAIT);
|
|
|
|
VI_LOCK(vp);
|
|
|
|
if (bvec == NULL) {
|
|
|
|
bvec = bvec_on_stack;
|
|
|
|
bvecsize = NFS_COMMITBVECSIZ;
|
|
|
|
} else
|
|
|
|
bvecsize = bveccount;
|
|
|
|
} else {
|
|
|
|
bvec = bvec_on_stack;
|
|
|
|
bvecsize = NFS_COMMITBVECSIZ;
|
|
|
|
}
|
|
|
|
for (bp = TAILQ_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) {
|
|
|
|
if (bvecpos >= bvecsize)
|
|
|
|
break;
|
|
|
|
if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL)) {
|
|
|
|
nbp = TAILQ_NEXT(bp, b_vnbufs);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if ((bp->b_flags & (B_DELWRI | B_NEEDCOMMIT)) !=
|
|
|
|
(B_DELWRI | B_NEEDCOMMIT)) {
|
|
|
|
BUF_UNLOCK(bp);
|
|
|
|
nbp = TAILQ_NEXT(bp, b_vnbufs);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
VI_UNLOCK(vp);
|
|
|
|
bremfree(bp);
|
|
|
|
/*
|
|
|
|
* Work out if all buffers are using the same cred
|
|
|
|
* so we can deal with them all with one commit.
|
|
|
|
*
|
|
|
|
* NOTE: we are not clearing B_DONE here, so we have
|
|
|
|
* to do it later on in this routine if we intend to
|
|
|
|
* initiate I/O on the bp.
|
|
|
|
*
|
|
|
|
* Note: to avoid loopback deadlocks, we do not
|
|
|
|
* assign b_runningbufspace.
|
|
|
|
*/
|
|
|
|
if (wcred == NULL)
|
|
|
|
wcred = bp->b_wcred;
|
|
|
|
else if (wcred != bp->b_wcred)
|
|
|
|
wcred = NOCRED;
|
|
|
|
bp->b_flags |= B_WRITEINPROG;
|
|
|
|
vfs_busy_pages(bp, 1);
|
|
|
|
|
|
|
|
VI_LOCK(vp);
|
|
|
|
/*
|
|
|
|
* bp is protected by being locked, but nbp is not
|
|
|
|
* and vfs_busy_pages() may sleep. We have to
|
|
|
|
* recalculate nbp.
|
|
|
|
*/
|
|
|
|
nbp = TAILQ_NEXT(bp, b_vnbufs);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* A list of these buffers is kept so that the
|
|
|
|
* second loop knows which buffers have actually
|
|
|
|
* been committed. This is necessary, since there
|
|
|
|
* may be a race between the commit rpc and new
|
|
|
|
* uncommitted writes on the file.
|
|
|
|
*/
|
|
|
|
bvec[bvecpos++] = bp;
|
|
|
|
toff = ((u_quad_t)bp->b_blkno) * DEV_BSIZE +
|
|
|
|
bp->b_dirtyoff;
|
|
|
|
if (toff < off)
|
|
|
|
off = toff;
|
|
|
|
toff += (u_quad_t)(bp->b_dirtyend - bp->b_dirtyoff);
|
|
|
|
if (toff > endoff)
|
|
|
|
endoff = toff;
|
|
|
|
}
|
|
|
|
splx(s);
|
|
|
|
VI_UNLOCK(vp);
|
|
|
|
}
|
|
|
|
if (bvecpos > 0) {
|
|
|
|
/*
|
|
|
|
* Commit data on the server, as required.
|
|
|
|
* If all bufs are using the same wcred, then use that with
|
|
|
|
* one call for all of them, otherwise commit each one
|
|
|
|
* separately.
|
|
|
|
*/
|
|
|
|
if (wcred != NOCRED)
|
|
|
|
retv = nfs4_commit(vp, off, (int)(endoff - off),
|
|
|
|
wcred, td);
|
|
|
|
else {
|
|
|
|
retv = 0;
|
|
|
|
for (i = 0; i < bvecpos; i++) {
|
|
|
|
off_t off, size;
|
|
|
|
bp = bvec[i];
|
|
|
|
off = ((u_quad_t)bp->b_blkno) * DEV_BSIZE +
|
|
|
|
bp->b_dirtyoff;
|
|
|
|
size = (u_quad_t)(bp->b_dirtyend
|
|
|
|
- bp->b_dirtyoff);
|
|
|
|
retv = nfs4_commit(vp, off, (int)size,
|
|
|
|
bp->b_wcred, td);
|
|
|
|
if (retv) break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (retv == NFSERR_STALEWRITEVERF)
|
|
|
|
nfs_clearcommit(vp->v_mount);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Now, either mark the blocks I/O done or mark the
|
|
|
|
* blocks dirty, depending on whether the commit
|
|
|
|
* succeeded.
|
|
|
|
*/
|
|
|
|
for (i = 0; i < bvecpos; i++) {
|
|
|
|
bp = bvec[i];
|
|
|
|
bp->b_flags &= ~(B_NEEDCOMMIT | B_WRITEINPROG | B_CLUSTEROK);
|
|
|
|
if (retv) {
|
|
|
|
/*
|
|
|
|
* Error, leave B_DELWRI intact
|
|
|
|
*/
|
|
|
|
vfs_unbusy_pages(bp);
|
|
|
|
brelse(bp);
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* Success, remove B_DELWRI ( bundirty() ).
|
|
|
|
*
|
|
|
|
* b_dirtyoff/b_dirtyend seem to be NFS
|
|
|
|
* specific. We should probably move that
|
|
|
|
* into bundirty(). XXX
|
|
|
|
*/
|
|
|
|
s = splbio();
|
|
|
|
VI_LOCK(vp);
|
|
|
|
vp->v_numoutput++;
|
|
|
|
VI_UNLOCK(vp);
|
|
|
|
bp->b_flags |= B_ASYNC;
|
|
|
|
bundirty(bp);
|
|
|
|
bp->b_flags &= ~B_DONE;
|
|
|
|
bp->b_ioflags &= ~BIO_ERROR;
|
|
|
|
bp->b_dirtyoff = bp->b_dirtyend = 0;
|
|
|
|
splx(s);
|
|
|
|
bufdone(bp);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Start/do any write(s) that are required.
|
|
|
|
*/
|
|
|
|
loop:
|
|
|
|
s = splbio();
|
|
|
|
VI_LOCK(vp);
|
|
|
|
for (bp = TAILQ_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) {
|
|
|
|
nbp = TAILQ_NEXT(bp, b_vnbufs);
|
|
|
|
if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL)) {
|
|
|
|
if (waitfor != MNT_WAIT || passone)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
error = BUF_TIMELOCK(bp,
|
|
|
|
LK_EXCLUSIVE | LK_SLEEPFAIL | LK_INTERLOCK,
|
|
|
|
VI_MTX(vp), "nfsfsync", slpflag, slptimeo);
|
|
|
|
splx(s);
|
|
|
|
if (error == 0)
|
|
|
|
panic("nfs4_fsync: inconsistent lock");
|
|
|
|
if (error == ENOLCK)
|
|
|
|
goto loop;
|
|
|
|
if (nfs4_sigintr(nmp, NULL, td)) {
|
|
|
|
error = EINTR;
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
if (slpflag == PCATCH) {
|
|
|
|
slpflag = 0;
|
|
|
|
slptimeo = 2 * hz;
|
|
|
|
}
|
|
|
|
goto loop;
|
|
|
|
}
|
|
|
|
if ((bp->b_flags & B_DELWRI) == 0)
|
|
|
|
panic("nfs4_fsync: not dirty");
|
|
|
|
if ((passone || !commit) && (bp->b_flags & B_NEEDCOMMIT)) {
|
|
|
|
BUF_UNLOCK(bp);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
VI_UNLOCK(vp);
|
|
|
|
bremfree(bp);
|
|
|
|
if (passone || !commit)
|
|
|
|
bp->b_flags |= B_ASYNC;
|
|
|
|
else
|
|
|
|
bp->b_flags |= B_ASYNC | B_WRITEINPROG;
|
|
|
|
splx(s);
|
2004-03-11 18:02:36 +00:00
|
|
|
bwrite(bp);
|
2003-11-14 20:54:10 +00:00
|
|
|
goto loop;
|
|
|
|
}
|
|
|
|
splx(s);
|
|
|
|
if (passone) {
|
|
|
|
passone = 0;
|
|
|
|
VI_UNLOCK(vp);
|
|
|
|
goto again;
|
|
|
|
}
|
|
|
|
if (waitfor == MNT_WAIT) {
|
|
|
|
while (vp->v_numoutput) {
|
|
|
|
vp->v_iflag |= VI_BWAIT;
|
|
|
|
error = msleep((caddr_t)&vp->v_numoutput, VI_MTX(vp),
|
|
|
|
slpflag | (PRIBIO + 1), "nfsfsync", slptimeo);
|
|
|
|
if (error) {
|
|
|
|
VI_UNLOCK(vp);
|
|
|
|
if (nfs4_sigintr(nmp, NULL, td)) {
|
|
|
|
error = EINTR;
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
if (slpflag == PCATCH) {
|
|
|
|
slpflag = 0;
|
|
|
|
slptimeo = 2 * hz;
|
|
|
|
}
|
|
|
|
VI_LOCK(vp);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (!TAILQ_EMPTY(&vp->v_dirtyblkhd) && commit) {
|
|
|
|
VI_UNLOCK(vp);
|
|
|
|
goto loop;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
VI_UNLOCK(vp);
|
|
|
|
if (np->n_flag & NWRITEERR) {
|
|
|
|
error = np->n_error;
|
|
|
|
np->n_flag &= ~NWRITEERR;
|
|
|
|
}
|
|
|
|
done:
|
|
|
|
if (bvec != NULL && bvec != bvec_on_stack)
|
|
|
|
free(bvec, M_TEMP);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* NFS advisory byte-level locks.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_advlock(struct vop_advlock_args *ap)
|
|
|
|
{
|
|
|
|
return (EPERM);
|
|
|
|
|
|
|
|
if ((VFSTONFS(ap->a_vp->v_mount)->nm_flag & NFSMNT_NOLOCKD) != 0) {
|
|
|
|
struct nfsnode *np = VTONFS(ap->a_vp);
|
|
|
|
|
|
|
|
return (lf_advlock(ap, &(np->n_lockf), np->n_size));
|
|
|
|
}
|
|
|
|
return (nfs_dolock(ap));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Print out the contents of an nfsnode.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs4_print(struct vop_print_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
|
|
|
|
printf("\tfileid %ld fsid 0x%x",
|
|
|
|
np->n_vattr.va_fileid, np->n_vattr.va_fsid);
|
|
|
|
if (vp->v_type == VFIFO)
|
|
|
|
fifo_printinfo(vp);
|
|
|
|
printf("\n");
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This is the "real" nfs::bwrite(struct buf*).
|
|
|
|
* B_WRITEINPROG isn't set unless the force flag is one and it
|
|
|
|
* handles the B_NEEDCOMMIT flag.
|
|
|
|
* We set B_CACHE if this is a VMIO buffer.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
nfs4_writebp(struct buf *bp, int force, struct thread *td)
|
|
|
|
{
|
|
|
|
int s;
|
|
|
|
int oldflags = bp->b_flags;
|
|
|
|
#if 0
|
|
|
|
int retv = 1;
|
|
|
|
off_t off;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (BUF_REFCNT(bp) == 0)
|
|
|
|
panic("bwrite: buffer is not locked???");
|
|
|
|
|
|
|
|
if (bp->b_flags & B_INVAL) {
|
|
|
|
brelse(bp);
|
|
|
|
return(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
bp->b_flags |= B_CACHE;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Undirty the bp. We will redirty it later if the I/O fails.
|
|
|
|
*/
|
|
|
|
|
|
|
|
s = splbio();
|
|
|
|
bundirty(bp);
|
|
|
|
bp->b_flags &= ~B_DONE;
|
|
|
|
bp->b_ioflags &= ~BIO_ERROR;
|
|
|
|
bp->b_iocmd = BIO_WRITE;
|
|
|
|
|
|
|
|
VI_LOCK(bp->b_vp);
|
|
|
|
bp->b_vp->v_numoutput++;
|
|
|
|
VI_UNLOCK(bp->b_vp);
|
|
|
|
curthread->td_proc->p_stats->p_ru.ru_oublock++;
|
|
|
|
splx(s);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Note: to avoid loopback deadlocks, we do not
|
|
|
|
* assign b_runningbufspace.
|
|
|
|
*/
|
|
|
|
vfs_busy_pages(bp, 1);
|
|
|
|
|
|
|
|
if (force)
|
|
|
|
bp->b_flags |= B_WRITEINPROG;
|
|
|
|
BUF_KERNPROC(bp);
|
|
|
|
bp->b_iooffset = dbtob(bp->b_blkno);
|
|
|
|
VOP_STRATEGY(bp->b_vp, bp);
|
|
|
|
|
|
|
|
if( (oldflags & B_ASYNC) == 0) {
|
|
|
|
int rtval = bufwait(bp);
|
|
|
|
|
|
|
|
if (oldflags & B_DELWRI) {
|
|
|
|
s = splbio();
|
2004-07-25 21:24:23 +00:00
|
|
|
reassignbuf(bp);
|
2003-11-14 20:54:10 +00:00
|
|
|
splx(s);
|
|
|
|
}
|
|
|
|
|
|
|
|
brelse(bp);
|
|
|
|
return (rtval);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* nfs special file access vnode op.
|
|
|
|
* Essentially just get vattr and then imitate iaccess() since the device is
|
|
|
|
* local to the client.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfsspec_access(struct vop_access_args *ap)
|
|
|
|
{
|
|
|
|
struct vattr *vap;
|
|
|
|
struct ucred *cred = ap->a_cred;
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
mode_t mode = ap->a_mode;
|
|
|
|
struct vattr vattr;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Disallow write attempts on filesystems mounted read-only;
|
|
|
|
* unless the file is a socket, fifo, or a block or character
|
|
|
|
* device resident on the filesystem.
|
|
|
|
*/
|
|
|
|
if ((mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) {
|
|
|
|
switch (vp->v_type) {
|
|
|
|
case VREG:
|
|
|
|
case VDIR:
|
|
|
|
case VLNK:
|
|
|
|
return (EROFS);
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
vap = &vattr;
|
|
|
|
error = VOP_GETATTR(vp, vap, cred, ap->a_td);
|
|
|
|
if (error)
|
|
|
|
return (error);
|
|
|
|
return (vaccess(vp->v_type, vap->va_mode, vap->va_uid, vap->va_gid,
|
|
|
|
mode, cred, NULL));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Read wrapper for special devices.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfsspec_read(struct vop_read_args *ap)
|
|
|
|
{
|
|
|
|
struct nfsnode *np = VTONFS(ap->a_vp);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set access flag.
|
|
|
|
*/
|
|
|
|
np->n_flag |= NACC;
|
|
|
|
getnanotime(&np->n_atim);
|
|
|
|
return (VOCALL(spec_vnodeop_p, VOFFSET(vop_read), ap));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Write wrapper for special devices.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfsspec_write(struct vop_write_args *ap)
|
|
|
|
{
|
|
|
|
struct nfsnode *np = VTONFS(ap->a_vp);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set update flag.
|
|
|
|
*/
|
|
|
|
np->n_flag |= NUPD;
|
|
|
|
getnanotime(&np->n_mtim);
|
|
|
|
return (VOCALL(spec_vnodeop_p, VOFFSET(vop_write), ap));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Close wrapper for special devices.
|
|
|
|
*
|
|
|
|
* Update the times on the nfsnode then do device close.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfsspec_close(struct vop_close_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
struct vattr vattr;
|
|
|
|
|
|
|
|
if (np->n_flag & (NACC | NUPD)) {
|
|
|
|
np->n_flag |= NCHG;
|
|
|
|
if (vrefcnt(vp) == 1 &&
|
|
|
|
(vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
|
|
|
|
VATTR_NULL(&vattr);
|
|
|
|
if (np->n_flag & NACC)
|
|
|
|
vattr.va_atime = np->n_atim;
|
|
|
|
if (np->n_flag & NUPD)
|
|
|
|
vattr.va_mtime = np->n_mtim;
|
|
|
|
(void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_td);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return (VOCALL(spec_vnodeop_p, VOFFSET(vop_close), ap));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Read wrapper for fifos.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfsfifo_read(struct vop_read_args *ap)
|
|
|
|
{
|
|
|
|
struct nfsnode *np = VTONFS(ap->a_vp);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set access flag.
|
|
|
|
*/
|
|
|
|
np->n_flag |= NACC;
|
|
|
|
getnanotime(&np->n_atim);
|
|
|
|
return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), ap));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Write wrapper for fifos.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfsfifo_write(struct vop_write_args *ap)
|
|
|
|
{
|
|
|
|
struct nfsnode *np = VTONFS(ap->a_vp);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set update flag.
|
|
|
|
*/
|
|
|
|
np->n_flag |= NUPD;
|
|
|
|
getnanotime(&np->n_mtim);
|
|
|
|
return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), ap));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Close wrapper for fifos.
|
|
|
|
*
|
|
|
|
* Update the times on the nfsnode then do fifo close.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfsfifo_close(struct vop_close_args *ap)
|
|
|
|
{
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
struct vattr vattr;
|
|
|
|
struct timespec ts;
|
|
|
|
|
|
|
|
if (np->n_flag & (NACC | NUPD)) {
|
|
|
|
getnanotime(&ts);
|
|
|
|
if (np->n_flag & NACC)
|
|
|
|
np->n_atim = ts;
|
|
|
|
if (np->n_flag & NUPD)
|
|
|
|
np->n_mtim = ts;
|
|
|
|
np->n_flag |= NCHG;
|
|
|
|
if (vrefcnt(vp) == 1 &&
|
|
|
|
(vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
|
|
|
|
VATTR_NULL(&vattr);
|
|
|
|
if (np->n_flag & NACC)
|
|
|
|
vattr.va_atime = np->n_atim;
|
|
|
|
if (np->n_flag & NUPD)
|
|
|
|
vattr.va_mtime = np->n_mtim;
|
|
|
|
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, ap->a_td);
|
|
|
|
(void)VOP_SETATTR(vp, &vattr, ap->a_cred, ap->a_td);
|
|
|
|
VOP_UNLOCK(vp, 0, ap->a_td);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return (VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), ap));
|
|
|
|
}
|
|
|
|
|