3613 lines
87 KiB
C
3613 lines
87 KiB
C
/* $OpenBSD: nfs_vnops.c,v 1.200 2024/05/14 06:26:05 jsg Exp $ */
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/* $NetBSD: nfs_vnops.c,v 1.62.4.1 1996/07/08 20:26:52 jtc Exp $ */
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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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* 3. 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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/*
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* vnode op calls for Sun NFS version 2 and 3
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/mount.h>
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#include <sys/buf.h>
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#include <sys/malloc.h>
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#include <sys/pool.h>
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#include <sys/mbuf.h>
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#include <sys/namei.h>
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#include <sys/vnode.h>
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#include <sys/lock.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/queue.h>
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#include <sys/specdev.h>
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#include <sys/unistd.h>
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#include <miscfs/fifofs/fifo.h>
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#include <nfs/nfsproto.h>
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#include <nfs/nfs.h>
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#include <nfs/nfsnode.h>
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#include <nfs/nfsmount.h>
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#include <nfs/xdr_subs.h>
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#include <nfs/nfs_var.h>
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#include <nfs/nfsm_subs.h>
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int nfs_access(void *);
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int nfs_advlock(void *);
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int nfs_bmap(void *);
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int nfs_bwrite(void *);
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int nfs_close(void *);
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int nfs_commit(struct vnode *, u_quad_t, int, struct proc *);
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int nfs_create(void *);
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int nfs_flush(struct vnode *, struct ucred *, int, struct proc *, int);
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int nfs_fsync(void *);
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int nfs_getattr(void *);
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int nfs_islocked(void *);
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int nfs_link(void *);
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int nfs_lock(void *);
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int nfs_lookitup(struct vnode *, char *, int, struct ucred *, struct proc *,
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struct nfsnode **);
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int nfs_lookup(void *);
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int nfs_mkdir(void *);
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int nfs_mknod(void *);
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int nfs_mknodrpc(struct vnode *, struct vnode **, struct componentname *,
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struct vattr *);
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int nfs_null(struct vnode *, struct ucred *, struct proc *);
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int nfs_open(void *);
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int nfs_pathconf(void *);
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int nfs_print(void *);
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int nfs_read(void *);
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int nfs_readdir(void *);
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int nfs_readdirplusrpc(struct vnode *, struct uio *, struct ucred *, int *,
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struct proc *);
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int nfs_readdirrpc(struct vnode *, struct uio *, struct ucred *, int *);
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int nfs_remove(void *);
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int nfs_removerpc(struct vnode *, char *, int, struct ucred *, struct proc *);
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int nfs_rename(void *);
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int nfs_renameit(struct vnode *, struct componentname *, struct sillyrename *);
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int nfs_renamerpc(struct vnode *, char *, int, struct vnode *, char *, int,
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struct ucred *, struct proc *);
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int nfs_rmdir(void *);
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int nfs_setattr(void *);
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int nfs_setattrrpc(struct vnode *, struct vattr *, struct ucred *,
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struct proc *);
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int nfs_sillyrename(struct vnode *, struct vnode *,
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struct componentname *);
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int nfs_strategy(void *);
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int nfs_symlink(void *);
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int nfs_unlock(void *);
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void nfs_cache_enter(struct vnode *, struct vnode *, struct componentname *);
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int nfsfifo_close(void *);
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int nfsfifo_read(void *);
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int nfsfifo_reclaim(void *);
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int nfsfifo_write(void *);
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int nfsspec_access(void *);
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int nfsspec_close(void *);
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int nfsspec_read(void *);
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int nfsspec_write(void *);
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/* Global vfs data structures for nfs. */
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const struct vops nfs_vops = {
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.vop_lookup = nfs_lookup,
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.vop_create = nfs_create,
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.vop_mknod = nfs_mknod,
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.vop_open = nfs_open,
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.vop_close = nfs_close,
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.vop_access = nfs_access,
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.vop_getattr = nfs_getattr,
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.vop_setattr = nfs_setattr,
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.vop_read = nfs_read,
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.vop_write = nfs_write,
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.vop_ioctl = nfs_ioctl,
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.vop_kqfilter = nfs_kqfilter,
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.vop_revoke = vop_generic_revoke,
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.vop_fsync = nfs_fsync,
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.vop_remove = nfs_remove,
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.vop_link = nfs_link,
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.vop_rename = nfs_rename,
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.vop_mkdir = nfs_mkdir,
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.vop_rmdir = nfs_rmdir,
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.vop_symlink = nfs_symlink,
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.vop_readdir = nfs_readdir,
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.vop_readlink = nfs_readlink,
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.vop_abortop = vop_generic_abortop,
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.vop_inactive = nfs_inactive,
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.vop_reclaim = nfs_reclaim,
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.vop_lock = nfs_lock,
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.vop_unlock = nfs_unlock,
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.vop_bmap = nfs_bmap,
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.vop_strategy = nfs_strategy,
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.vop_print = nfs_print,
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.vop_islocked = nfs_islocked,
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.vop_pathconf = nfs_pathconf,
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.vop_advlock = nfs_advlock,
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.vop_bwrite = nfs_bwrite
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};
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/* Special device vnode ops. */
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const struct vops nfs_specvops = {
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.vop_close = nfsspec_close,
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.vop_access = nfsspec_access,
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.vop_getattr = nfs_getattr,
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.vop_setattr = nfs_setattr,
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.vop_read = nfsspec_read,
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.vop_write = nfsspec_write,
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.vop_fsync = nfs_fsync,
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.vop_inactive = nfs_inactive,
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.vop_reclaim = nfs_reclaim,
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.vop_lock = nfs_lock,
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.vop_unlock = nfs_unlock,
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.vop_print = nfs_print,
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.vop_islocked = nfs_islocked,
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/* XXX: Keep in sync with spec_vops. */
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.vop_lookup = vop_generic_lookup,
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.vop_create = vop_generic_badop,
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.vop_mknod = vop_generic_badop,
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.vop_open = spec_open,
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.vop_ioctl = spec_ioctl,
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.vop_kqfilter = spec_kqfilter,
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.vop_revoke = vop_generic_revoke,
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.vop_remove = vop_generic_badop,
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.vop_link = vop_generic_badop,
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.vop_rename = vop_generic_badop,
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.vop_mkdir = vop_generic_badop,
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.vop_rmdir = vop_generic_badop,
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.vop_symlink = vop_generic_badop,
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.vop_readdir = vop_generic_badop,
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.vop_readlink = vop_generic_badop,
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.vop_abortop = vop_generic_badop,
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.vop_bmap = vop_generic_bmap,
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.vop_strategy = spec_strategy,
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.vop_pathconf = spec_pathconf,
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.vop_advlock = spec_advlock,
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.vop_bwrite = vop_generic_bwrite,
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};
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#ifdef FIFO
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const struct vops nfs_fifovops = {
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.vop_close = nfsfifo_close,
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.vop_access = nfsspec_access,
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.vop_getattr = nfs_getattr,
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.vop_setattr = nfs_setattr,
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.vop_read = nfsfifo_read,
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.vop_write = nfsfifo_write,
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.vop_fsync = nfs_fsync,
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.vop_inactive = nfs_inactive,
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.vop_reclaim = nfsfifo_reclaim,
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.vop_lock = nfs_lock,
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.vop_unlock = nfs_unlock,
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.vop_print = nfs_print,
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.vop_islocked = nfs_islocked,
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.vop_bwrite = vop_generic_bwrite,
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/* XXX: Keep in sync with fifo_vops. */
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.vop_lookup = vop_generic_lookup,
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.vop_create = vop_generic_badop,
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.vop_mknod = vop_generic_badop,
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.vop_open = fifo_open,
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.vop_ioctl = fifo_ioctl,
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.vop_kqfilter = fifo_kqfilter,
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.vop_revoke = vop_generic_revoke,
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.vop_remove = vop_generic_badop,
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.vop_link = vop_generic_badop,
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.vop_rename = vop_generic_badop,
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.vop_mkdir = vop_generic_badop,
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.vop_rmdir = vop_generic_badop,
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.vop_symlink = vop_generic_badop,
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.vop_readdir = vop_generic_badop,
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.vop_readlink = vop_generic_badop,
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.vop_abortop = vop_generic_badop,
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.vop_bmap = vop_generic_bmap,
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.vop_strategy = vop_generic_badop,
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.vop_pathconf = fifo_pathconf,
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.vop_advlock = fifo_advlock,
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};
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#endif /* FIFO */
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/*
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* Global variables
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*/
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extern u_int32_t nfs_true, nfs_false;
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extern u_int32_t nfs_xdrneg1;
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extern struct nfsstats nfsstats;
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extern const nfstype nfsv3_type[9];
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int nfs_numasync = 0;
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void
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nfs_cache_enter(struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
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{
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struct nfsnode *np;
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if (vp != NULL) {
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np = VTONFS(vp);
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np->n_ctime = np->n_vattr.va_ctime.tv_sec;
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} else {
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np = VTONFS(dvp);
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if (!np->n_ctime)
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np->n_ctime = np->n_vattr.va_mtime.tv_sec;
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}
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cache_enter(dvp, vp, cnp);
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}
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/*
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* nfs null call from vfs.
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*/
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int
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nfs_null(struct vnode *vp, struct ucred *cred, struct proc *procp)
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{
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struct nfsm_info info;
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int error = 0;
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info.nmi_mb = info.nmi_mreq = nfsm_reqhead(0);
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info.nmi_errorp = &error;
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error = nfs_request(vp, NFSPROC_NULL, &info);
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m_freem(info.nmi_mrep);
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return (error);
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}
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/*
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* nfs access vnode op.
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* For nfs version 2, just return ok. File accesses may fail later.
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* For nfs version 3, use the access rpc to check accessibility. If file modes
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* are changed on the server, accesses might still fail later.
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*/
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int
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nfs_access(void *v)
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{
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struct vop_access_args *ap = v;
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struct vnode *vp = ap->a_vp;
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u_int32_t *tl;
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int error = 0, attrflag;
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u_int32_t mode, rmode;
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int v3 = NFS_ISV3(vp);
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int cachevalid;
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struct nfsm_info info;
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struct nfsnode *np = VTONFS(vp);
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/*
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* Disallow write attempts on filesystems mounted read-only;
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* unless the file is a socket, fifo, or a block or character
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* device resident on the filesystem.
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*/
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if ((ap->a_mode & VWRITE) && (vp->v_mount->mnt_flag & MNT_RDONLY)) {
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switch (vp->v_type) {
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case VREG:
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case VDIR:
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case VLNK:
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return (EROFS);
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default:
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break;
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}
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}
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/*
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* Check access cache first. If a request has been made for this uid
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* shortly before, use the cached result.
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*/
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cachevalid = (np->n_accstamp != -1 &&
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(gettime() - np->n_accstamp) < nfs_attrtimeo(np) &&
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np->n_accuid == ap->a_cred->cr_uid);
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if (cachevalid) {
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if (!np->n_accerror) {
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if ((np->n_accmode & ap->a_mode) == ap->a_mode)
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return (np->n_accerror);
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} else if ((np->n_accmode & ap->a_mode) == np->n_accmode)
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return (np->n_accerror);
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}
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/*
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* For nfs v3, do an access rpc, otherwise you are stuck emulating
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* ufs_access() locally using the vattr. This may not be correct,
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* since the server may apply other access criteria such as
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* client uid-->server uid mapping that we do not know about, but
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* this is better than just returning anything that is lying about
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* in the cache.
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*/
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if (v3) {
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nfsstats.rpccnt[NFSPROC_ACCESS]++;
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info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(v3) + NFSX_UNSIGNED);
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nfsm_fhtom(&info, vp, v3);
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tl = nfsm_build(&info.nmi_mb, NFSX_UNSIGNED);
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if (ap->a_mode & VREAD)
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mode = NFSV3ACCESS_READ;
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else
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mode = 0;
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if (vp->v_type == VDIR) {
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if (ap->a_mode & VWRITE)
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mode |= (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND |
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NFSV3ACCESS_DELETE);
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if (ap->a_mode & VEXEC)
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mode |= NFSV3ACCESS_LOOKUP;
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} else {
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if (ap->a_mode & VWRITE)
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mode |= (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND);
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if (ap->a_mode & VEXEC)
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mode |= NFSV3ACCESS_EXECUTE;
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}
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*tl = txdr_unsigned(mode);
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info.nmi_procp = ap->a_p;
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info.nmi_cred = ap->a_cred;
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info.nmi_errorp = &error;
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error = nfs_request(vp, NFSPROC_ACCESS, &info);
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if (nfsm_postop_attr(&info, &vp, &attrflag) != 0)
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goto nfsmout;
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if (error) {
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m_freem(info.nmi_mrep);
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goto nfsmout;
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}
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tl = (uint32_t *)nfsm_dissect(&info, NFSX_UNSIGNED);
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if (tl == NULL)
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goto nfsmout;
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rmode = fxdr_unsigned(u_int32_t, *tl);
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/*
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* The NFS V3 spec does not clarify whether or not
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* the returned access bits can be a superset of
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* the ones requested, so...
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*/
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if ((rmode & mode) != mode)
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error = EACCES;
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m_freem(info.nmi_mrep);
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} else
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return (nfsspec_access(ap));
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/*
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* If we got the same result as for a previous, different request, OR
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* it in. Don't update the timestamp in that case.
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*/
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if (!error || error == EACCES) {
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if (cachevalid && np->n_accstamp != -1 &&
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error == np->n_accerror) {
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if (!error)
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np->n_accmode |= ap->a_mode;
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else {
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if ((np->n_accmode & ap->a_mode) == ap->a_mode)
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np->n_accmode = ap->a_mode;
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}
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} else {
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np->n_accstamp = gettime();
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np->n_accuid = ap->a_cred->cr_uid;
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np->n_accmode = ap->a_mode;
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np->n_accerror = error;
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}
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}
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nfsmout:
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return (error);
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}
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/*
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* nfs open vnode op
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* Check to see if the type is ok
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* and that deletion is not in progress.
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* For paged in text files, you will need to flush the page cache
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* if consistency is lost.
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*/
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int
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nfs_open(void *v)
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{
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struct vop_open_args *ap = v;
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struct vnode *vp = ap->a_vp;
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struct nfsnode *np = VTONFS(vp);
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struct vattr vattr;
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int error;
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if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK) {
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#ifdef DIAGNOSTIC
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printf("open eacces vtyp=%d\n",vp->v_type);
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#endif
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return (EACCES);
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}
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/*
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* Initialize read and write creds here, for swapfiles
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* and other paths that don't set the creds themselves.
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*/
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if (ap->a_mode & FREAD) {
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if (np->n_rcred) {
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crfree(np->n_rcred);
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}
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np->n_rcred = ap->a_cred;
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crhold(np->n_rcred);
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}
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if (ap->a_mode & FWRITE) {
|
|
if (np->n_wcred) {
|
|
crfree(np->n_wcred);
|
|
}
|
|
np->n_wcred = ap->a_cred;
|
|
crhold(np->n_wcred);
|
|
}
|
|
|
|
if (np->n_flag & NMODIFIED) {
|
|
error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p);
|
|
if (error == EINTR)
|
|
return (error);
|
|
uvm_vnp_uncache(vp);
|
|
NFS_INVALIDATE_ATTRCACHE(np);
|
|
if (vp->v_type == VDIR)
|
|
np->n_direofoffset = 0;
|
|
error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p);
|
|
if (error)
|
|
return (error);
|
|
np->n_mtime = vattr.va_mtime;
|
|
} else {
|
|
error = VOP_GETATTR(vp, &vattr, ap->a_cred, ap->a_p);
|
|
if (error)
|
|
return (error);
|
|
if (timespeccmp(&np->n_mtime, &vattr.va_mtime, !=)) {
|
|
if (vp->v_type == VDIR)
|
|
np->n_direofoffset = 0;
|
|
error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p);
|
|
if (error == EINTR)
|
|
return (error);
|
|
uvm_vnp_uncache(vp);
|
|
np->n_mtime = vattr.va_mtime;
|
|
}
|
|
}
|
|
/* For open/close consistency. */
|
|
NFS_INVALIDATE_ATTRCACHE(np);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* nfs close vnode op
|
|
* What an NFS client should do upon close after writing is a debatable issue.
|
|
* Most NFS clients push delayed writes to the server upon close, basically for
|
|
* two reasons:
|
|
* 1 - So that any write errors may be reported back to the client process
|
|
* doing the close system call. By far the two most likely errors are
|
|
* NFSERR_NOSPC and NFSERR_DQUOT to indicate space allocation failure.
|
|
* 2 - To put a worst case upper bound on cache inconsistency between
|
|
* multiple clients for the file.
|
|
* There is also a consistency problem for Version 2 of the protocol w.r.t.
|
|
* not being able to tell if other clients are writing a file concurrently,
|
|
* since there is no way of knowing if the changed modify time in the reply
|
|
* is only due to the write for this client.
|
|
* (NFS Version 3 provides weak cache consistency data in the reply that
|
|
* should be sufficient to detect and handle this case.)
|
|
*
|
|
* The current code does the following:
|
|
* for NFS Version 2 - play it safe and flush/invalidate all dirty buffers
|
|
* for NFS Version 3 - flush dirty buffers to the server but don't invalidate
|
|
* or commit them (this satisfies 1 and 2 except for the
|
|
* case where the server crashes after this close but
|
|
* before the commit RPC, which is felt to be "good
|
|
* enough". Changing the last argument to nfs_flush() to
|
|
* a 1 would force a commit operation, if it is felt a
|
|
* commit is necessary now.
|
|
*/
|
|
int
|
|
nfs_close(void *v)
|
|
{
|
|
struct vop_close_args *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct nfsnode *np = VTONFS(vp);
|
|
int error = 0;
|
|
|
|
if (vp->v_type == VREG) {
|
|
if (np->n_flag & NMODIFIED) {
|
|
if (NFS_ISV3(vp)) {
|
|
error = nfs_flush(vp, ap->a_cred, MNT_WAIT, ap->a_p, 0);
|
|
np->n_flag &= ~NMODIFIED;
|
|
} else
|
|
error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred, ap->a_p);
|
|
NFS_INVALIDATE_ATTRCACHE(np);
|
|
}
|
|
if (np->n_flag & NWRITEERR) {
|
|
np->n_flag &= ~NWRITEERR;
|
|
error = np->n_error;
|
|
}
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
static inline int
|
|
nfsm_loadattr(struct nfsm_info *infop, struct vnode **vpp, struct vattr *vap)
|
|
{
|
|
struct vnode *ttvp = *vpp;
|
|
int error;
|
|
|
|
error = nfs_loadattrcache(&ttvp, &infop->nmi_md, &infop->nmi_dpos, vap);
|
|
if (error != 0) {
|
|
m_freem(infop->nmi_mrep);
|
|
*infop->nmi_errorp = error;
|
|
return error;
|
|
}
|
|
*vpp = ttvp;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* nfs getattr call from vfs.
|
|
*/
|
|
int
|
|
nfs_getattr(void *v)
|
|
{
|
|
struct vop_getattr_args *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct nfsnode *np = VTONFS(vp);
|
|
struct nfsm_info info;
|
|
int error = 0;
|
|
|
|
info.nmi_v3 = NFS_ISV3(vp);
|
|
|
|
/*
|
|
* 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]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(info.nmi_v3));
|
|
nfsm_fhtom(&info, vp, info.nmi_v3);
|
|
info.nmi_procp = ap->a_p;
|
|
info.nmi_cred = ap->a_cred;
|
|
info.nmi_errorp = &error;
|
|
error = nfs_request(vp, NFSPROC_GETATTR, &info);
|
|
if (!error) {
|
|
if (nfsm_loadattr(&info, &vp, ap->a_vap) != 0)
|
|
goto nfsmout;
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
nfsmout:
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs setattr call.
|
|
*/
|
|
int
|
|
nfs_setattr(void *v)
|
|
{
|
|
struct vop_setattr_args *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct nfsnode *np = VTONFS(vp);
|
|
struct vattr *vap = ap->a_vap;
|
|
int hint = NOTE_ATTRIB;
|
|
int error = 0;
|
|
u_quad_t tsize = 0;
|
|
|
|
/*
|
|
* 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_uid != (uid_t)VNOVAL ||
|
|
vap->va_gid != (gid_t)VNOVAL ||
|
|
vap->va_atime.tv_nsec != VNOVAL ||
|
|
vap->va_mtime.tv_nsec != 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_nsec == VNOVAL &&
|
|
vap->va_atime.tv_nsec == 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);
|
|
if (vap->va_size == 0)
|
|
error = nfs_vinvalbuf(vp, 0,
|
|
ap->a_cred, ap->a_p);
|
|
else
|
|
error = nfs_vinvalbuf(vp, V_SAVE,
|
|
ap->a_cred, ap->a_p);
|
|
if (error)
|
|
return (error);
|
|
tsize = np->n_size;
|
|
np->n_size = np->n_vattr.va_size = vap->va_size;
|
|
uvm_vnp_setsize(vp, np->n_size);
|
|
};
|
|
} else if ((vap->va_mtime.tv_nsec != VNOVAL ||
|
|
vap->va_atime.tv_nsec != VNOVAL) &&
|
|
vp->v_type == VREG &&
|
|
(error = nfs_vinvalbuf(vp, V_SAVE, ap->a_cred,
|
|
ap->a_p)) == EINTR)
|
|
return (error);
|
|
error = nfs_setattrrpc(vp, vap, ap->a_cred, ap->a_p);
|
|
if (error && vap->va_size != VNOVAL) {
|
|
np->n_size = np->n_vattr.va_size = tsize;
|
|
uvm_vnp_setsize(vp, np->n_size);
|
|
}
|
|
|
|
if (vap->va_size != VNOVAL && vap->va_size < tsize)
|
|
hint |= NOTE_TRUNCATE;
|
|
|
|
VN_KNOTE(vp, hint); /* XXX setattrrpc? */
|
|
|
|
return (error);
|
|
}
|
|
|
|
/* Used as *flagp for nfsm_wcc_data() below */
|
|
#define NFSV3_WCCRATTR 0
|
|
#define NFSV3_WCCCHK 1
|
|
|
|
static inline int
|
|
nfsm_wcc_data(struct nfsm_info *infop, struct vnode **vpp, int *flagp)
|
|
{
|
|
struct timespec mtime;
|
|
int ttattrf, ttretf = 0;
|
|
uint32_t *tl;
|
|
|
|
if (infop->nmi_mrep == NULL)
|
|
return 0;
|
|
|
|
tl = (uint32_t *)nfsm_dissect(infop, NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
return 1;
|
|
if (*tl == nfs_true) {
|
|
tl = (uint32_t *)nfsm_dissect(infop, 6 * NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
return 1;
|
|
fxdr_nfsv3time(tl + 2, &mtime);
|
|
if (*flagp != NFSV3_WCCRATTR) {
|
|
ttretf =
|
|
timespeccmp(&VTONFS(*vpp)->n_mtime, &mtime, !=);
|
|
}
|
|
}
|
|
if (nfsm_postop_attr(infop, vpp, &ttattrf) != 0)
|
|
return 1;
|
|
if (*flagp != NFSV3_WCCRATTR)
|
|
*flagp = ttretf;
|
|
else
|
|
*flagp = ttattrf;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Do an nfs setattr rpc.
|
|
*/
|
|
int
|
|
nfs_setattrrpc(struct vnode *vp, struct vattr *vap, struct ucred *cred,
|
|
struct proc *procp)
|
|
{
|
|
struct nfsv2_sattr *sp;
|
|
struct nfsm_info info;
|
|
u_int32_t *tl;
|
|
int error = 0, wccflag = NFSV3_WCCRATTR;
|
|
int v3 = NFS_ISV3(vp);
|
|
|
|
info.nmi_v3 = NFS_ISV3(vp);
|
|
|
|
nfsstats.rpccnt[NFSPROC_SETATTR]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(v3) + NFSX_SATTR(v3));
|
|
nfsm_fhtom(&info, vp, v3);
|
|
info.nmi_errorp = &error;
|
|
|
|
if (info.nmi_v3) {
|
|
nfsm_v3attrbuild(&info.nmi_mb, vap, 1);
|
|
tl = nfsm_build(&info.nmi_mb, NFSX_UNSIGNED);
|
|
*tl = nfs_false;
|
|
} else {
|
|
sp = nfsm_build(&info.nmi_mb, NFSX_V2SATTR);
|
|
if (vap->va_mode == (mode_t)VNOVAL)
|
|
sp->sa_mode = nfs_xdrneg1;
|
|
else
|
|
sp->sa_mode = vtonfsv2_mode(vp->v_type, vap->va_mode);
|
|
if (vap->va_uid == (uid_t)VNOVAL)
|
|
sp->sa_uid = nfs_xdrneg1;
|
|
else
|
|
sp->sa_uid = txdr_unsigned(vap->va_uid);
|
|
if (vap->va_gid == (gid_t)VNOVAL)
|
|
sp->sa_gid = nfs_xdrneg1;
|
|
else
|
|
sp->sa_gid = txdr_unsigned(vap->va_gid);
|
|
sp->sa_size = txdr_unsigned(vap->va_size);
|
|
txdr_nfsv2time(&vap->va_atime, &sp->sa_atime);
|
|
txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime);
|
|
}
|
|
|
|
info.nmi_procp = procp;
|
|
info.nmi_cred = cred;
|
|
error = nfs_request(vp, NFSPROC_SETATTR, &info);
|
|
|
|
if (info.nmi_v3) {
|
|
if (nfsm_wcc_data(&info, &vp, &wccflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
else if (error == 0) {
|
|
if (nfsm_loadattr(&info, &vp, NULL) != 0)
|
|
goto nfsmout;
|
|
}
|
|
|
|
m_freem(info.nmi_mrep);
|
|
nfsmout:
|
|
return (error);
|
|
}
|
|
|
|
static inline nfsfh_t *
|
|
nfsm_getfh(struct nfsm_info *infop, int *sizep, int v3)
|
|
{
|
|
int size;
|
|
if (v3) {
|
|
uint32_t *tl = (uint32_t *)nfsm_dissect(infop, NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
return NULL;
|
|
size = fxdr_unsigned(int, *tl);
|
|
if (size <= 0 || size > NFSX_V3FHMAX) {
|
|
m_freem(infop->nmi_mrep);
|
|
*infop->nmi_errorp = EBADRPC;
|
|
return NULL;
|
|
}
|
|
} else
|
|
size = NFSX_V2FH;
|
|
*sizep = size;
|
|
return (nfsfh_t *)nfsm_dissect(infop, nfsm_rndup(size));
|
|
}
|
|
|
|
/*
|
|
* nfs lookup call, one step at a time...
|
|
* First look in cache
|
|
* If not found, unlock the directory nfsnode and do the rpc
|
|
*/
|
|
int
|
|
nfs_lookup(void *v)
|
|
{
|
|
struct vop_lookup_args *ap = v;
|
|
struct componentname *cnp = ap->a_cnp;
|
|
struct vnode *dvp = ap->a_dvp;
|
|
struct vnode **vpp = ap->a_vpp;
|
|
struct nfsm_info info;
|
|
int flags;
|
|
struct vnode *newvp;
|
|
struct nfsmount *nmp;
|
|
long len;
|
|
nfsfh_t *fhp;
|
|
struct nfsnode *np;
|
|
int lockparent, wantparent, error = 0, attrflag, fhsize;
|
|
|
|
info.nmi_v3 = NFS_ISV3(dvp);
|
|
info.nmi_errorp = &error;
|
|
|
|
cnp->cn_flags &= ~PDIRUNLOCK;
|
|
flags = cnp->cn_flags;
|
|
|
|
*vpp = NULLVP;
|
|
newvp = NULLVP;
|
|
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);
|
|
|
|
/*
|
|
* Before tediously performing a linear scan of the directory,
|
|
* check the name cache to see if the directory/name pair
|
|
* we are looking for is known already.
|
|
* If the directory/name pair is found in the name cache,
|
|
* we have to ensure the directory has not changed from
|
|
* the time the cache entry has been created. If it has,
|
|
* the cache entry has to be ignored.
|
|
*/
|
|
if ((error = cache_lookup(dvp, vpp, cnp)) >= 0) {
|
|
struct vattr vattr;
|
|
int err2;
|
|
|
|
if (error && error != ENOENT) {
|
|
*vpp = NULLVP;
|
|
return (error);
|
|
}
|
|
|
|
if (cnp->cn_flags & PDIRUNLOCK) {
|
|
err2 = vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
|
|
if (err2 != 0) {
|
|
*vpp = NULLVP;
|
|
return (err2);
|
|
}
|
|
cnp->cn_flags &= ~PDIRUNLOCK;
|
|
}
|
|
|
|
err2 = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, cnp->cn_proc);
|
|
if (err2 != 0) {
|
|
if (error == 0) {
|
|
if (*vpp != dvp)
|
|
vput(*vpp);
|
|
else
|
|
vrele(*vpp);
|
|
}
|
|
*vpp = NULLVP;
|
|
return (err2);
|
|
}
|
|
|
|
if (error == ENOENT) {
|
|
if (!VOP_GETATTR(dvp, &vattr, cnp->cn_cred,
|
|
cnp->cn_proc) && vattr.va_mtime.tv_sec ==
|
|
VTONFS(dvp)->n_ctime)
|
|
return (ENOENT);
|
|
cache_purge(dvp);
|
|
np->n_ctime = 0;
|
|
goto dorpc;
|
|
}
|
|
|
|
newvp = *vpp;
|
|
if (!VOP_GETATTR(newvp, &vattr, cnp->cn_cred, cnp->cn_proc)
|
|
&& vattr.va_ctime.tv_sec == VTONFS(newvp)->n_ctime)
|
|
{
|
|
nfsstats.lookupcache_hits++;
|
|
if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
|
|
cnp->cn_flags |= SAVENAME;
|
|
if ((!lockparent || !(flags & ISLASTCN)) &&
|
|
newvp != dvp) {
|
|
VOP_UNLOCK(dvp);
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
}
|
|
return (0);
|
|
}
|
|
cache_purge(newvp);
|
|
if (newvp != dvp)
|
|
vput(newvp);
|
|
else
|
|
vrele(newvp);
|
|
*vpp = NULLVP;
|
|
}
|
|
dorpc:
|
|
error = 0;
|
|
newvp = NULLVP;
|
|
nfsstats.lookupcache_misses++;
|
|
nfsstats.rpccnt[NFSPROC_LOOKUP]++;
|
|
len = cnp->cn_namelen;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(info.nmi_v3) +
|
|
NFSX_UNSIGNED + nfsm_rndup(len));
|
|
nfsm_fhtom(&info, dvp, info.nmi_v3);
|
|
if (nfsm_strtom(&info, cnp->cn_nameptr, len, NFS_MAXNAMLEN) != 0)
|
|
goto nfsmout;
|
|
|
|
info.nmi_procp = cnp->cn_proc;
|
|
info.nmi_cred = cnp->cn_cred;
|
|
error = nfs_request(dvp, NFSPROC_LOOKUP, &info);
|
|
|
|
if (error) {
|
|
if (info.nmi_v3) {
|
|
if (nfsm_postop_attr(&info, &dvp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
goto nfsmout;
|
|
}
|
|
|
|
if ((fhp = nfsm_getfh(&info, &fhsize, info.nmi_v3)) == NULL)
|
|
goto nfsmout;
|
|
|
|
/*
|
|
* Handle RENAME case...
|
|
*/
|
|
if (cnp->cn_nameiop == RENAME && wantparent && (flags & ISLASTCN)) {
|
|
if (NFS_CMPFH(np, fhp, fhsize)) {
|
|
m_freem(info.nmi_mrep);
|
|
return (EISDIR);
|
|
}
|
|
error = nfs_nget(dvp->v_mount, fhp, fhsize, &np);
|
|
if (error) {
|
|
m_freem(info.nmi_mrep);
|
|
return (error);
|
|
}
|
|
newvp = NFSTOV(np);
|
|
if (info.nmi_v3) {
|
|
if (nfsm_postop_attr(&info, &newvp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
if (nfsm_postop_attr(&info, &dvp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
} else {
|
|
if (nfsm_loadattr(&info, &newvp, NULL) != 0)
|
|
goto nfsmout;
|
|
}
|
|
*vpp = newvp;
|
|
m_freem(info.nmi_mrep);
|
|
cnp->cn_flags |= SAVENAME;
|
|
if (!lockparent) {
|
|
VOP_UNLOCK(dvp);
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* The postop attr handling is duplicated for each if case,
|
|
* because it should be done while dvp is locked (unlocking
|
|
* dvp is different for each case).
|
|
*/
|
|
|
|
if (NFS_CMPFH(np, fhp, fhsize)) {
|
|
vref(dvp);
|
|
newvp = dvp;
|
|
if (info.nmi_v3) {
|
|
if (nfsm_postop_attr(&info, &newvp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
if (nfsm_postop_attr(&info, &dvp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
} else {
|
|
if (nfsm_loadattr(&info, &newvp, NULL) != 0)
|
|
goto nfsmout;
|
|
}
|
|
} else if (flags & ISDOTDOT) {
|
|
VOP_UNLOCK(dvp);
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
|
|
error = nfs_nget(dvp->v_mount, fhp, fhsize, &np);
|
|
if (error) {
|
|
if (vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY) == 0)
|
|
cnp->cn_flags &= ~PDIRUNLOCK;
|
|
m_freem(info.nmi_mrep);
|
|
return (error);
|
|
}
|
|
newvp = NFSTOV(np);
|
|
|
|
if (info.nmi_v3) {
|
|
if (nfsm_postop_attr(&info, &newvp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
if (nfsm_postop_attr(&info, &dvp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
} else {
|
|
if (nfsm_loadattr(&info, &newvp, NULL) != 0)
|
|
goto nfsmout;
|
|
}
|
|
|
|
if (lockparent && (flags & ISLASTCN)) {
|
|
if ((error = vn_lock(dvp, LK_EXCLUSIVE))) {
|
|
m_freem(info.nmi_mrep);
|
|
vput(newvp);
|
|
return error;
|
|
}
|
|
cnp->cn_flags &= ~PDIRUNLOCK;
|
|
}
|
|
|
|
} else {
|
|
error = nfs_nget(dvp->v_mount, fhp, fhsize, &np);
|
|
if (error) {
|
|
m_freem(info.nmi_mrep);
|
|
return error;
|
|
}
|
|
newvp = NFSTOV(np);
|
|
if (info.nmi_v3) {
|
|
if (nfsm_postop_attr(&info, &newvp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
if (nfsm_postop_attr(&info, &dvp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
} else {
|
|
if (nfsm_loadattr(&info, &newvp, NULL) != 0)
|
|
goto nfsmout;
|
|
}
|
|
if (!lockparent || !(flags & ISLASTCN)) {
|
|
VOP_UNLOCK(dvp);
|
|
cnp->cn_flags |= PDIRUNLOCK;
|
|
}
|
|
}
|
|
|
|
if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
|
|
cnp->cn_flags |= SAVENAME;
|
|
if ((cnp->cn_flags & MAKEENTRY) &&
|
|
(cnp->cn_nameiop != DELETE || !(flags & ISLASTCN))) {
|
|
nfs_cache_enter(dvp, newvp, cnp);
|
|
}
|
|
|
|
*vpp = newvp;
|
|
m_freem(info.nmi_mrep);
|
|
|
|
nfsmout:
|
|
if (error) {
|
|
/*
|
|
* We get here only because of errors returned by the RPC.
|
|
* Otherwise we'd already have returned.
|
|
*/
|
|
if (error == ENOENT && (cnp->cn_flags & MAKEENTRY) &&
|
|
cnp->cn_nameiop != CREATE) {
|
|
nfs_cache_enter(dvp, NULL, cnp);
|
|
}
|
|
if (newvp != NULLVP) {
|
|
if (newvp != dvp)
|
|
vput(newvp);
|
|
else
|
|
vrele(newvp);
|
|
}
|
|
if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME) &&
|
|
(flags & ISLASTCN) && error == ENOENT) {
|
|
if (dvp->v_mount->mnt_flag & MNT_RDONLY)
|
|
error = EROFS;
|
|
else
|
|
error = EJUSTRETURN;
|
|
}
|
|
if (cnp->cn_nameiop != LOOKUP && (flags & ISLASTCN))
|
|
cnp->cn_flags |= SAVENAME;
|
|
*vpp = NULL;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs read call.
|
|
* Just call nfs_bioread() to do the work.
|
|
*/
|
|
int
|
|
nfs_read(void *v)
|
|
{
|
|
struct vop_read_args *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
if (vp->v_type != VREG)
|
|
return (EPERM);
|
|
return (nfs_bioread(vp, ap->a_uio, ap->a_ioflag, ap->a_cred));
|
|
}
|
|
|
|
/*
|
|
* nfs readlink call
|
|
*/
|
|
int
|
|
nfs_readlink(void *v)
|
|
{
|
|
struct vop_readlink_args *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
if (vp->v_type != VLNK)
|
|
return (EPERM);
|
|
return (nfs_bioread(vp, ap->a_uio, 0, ap->a_cred));
|
|
}
|
|
|
|
/*
|
|
* Lock an inode.
|
|
*/
|
|
int
|
|
nfs_lock(void *v)
|
|
{
|
|
struct vop_lock_args *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
return rrw_enter(&VTONFS(vp)->n_lock, ap->a_flags & LK_RWFLAGS);
|
|
}
|
|
|
|
/*
|
|
* Unlock an inode.
|
|
*/
|
|
int
|
|
nfs_unlock(void *v)
|
|
{
|
|
struct vop_unlock_args *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
rrw_exit(&VTONFS(vp)->n_lock);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Check for a locked inode.
|
|
*/
|
|
int
|
|
nfs_islocked(void *v)
|
|
{
|
|
struct vop_islocked_args *ap = v;
|
|
|
|
return rrw_status(&VTONFS(ap->a_vp)->n_lock);
|
|
}
|
|
|
|
/*
|
|
* Do a readlink rpc.
|
|
* Called by nfs_doio() from below the buffer cache.
|
|
*/
|
|
int
|
|
nfs_readlinkrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred)
|
|
{
|
|
struct nfsm_info info;
|
|
int error = 0, len, attrflag;
|
|
|
|
info.nmi_v3 = NFS_ISV3(vp);
|
|
info.nmi_errorp = &error;
|
|
|
|
nfsstats.rpccnt[NFSPROC_READLINK]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(info.nmi_v3));
|
|
nfsm_fhtom(&info, vp, info.nmi_v3);
|
|
|
|
info.nmi_procp = curproc;
|
|
info.nmi_cred = cred;
|
|
error = nfs_request(vp, NFSPROC_READLINK, &info);
|
|
|
|
if (info.nmi_v3) {
|
|
if (nfsm_postop_attr(&info, &vp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
if (!error) {
|
|
if (nfsm_strsiz(&info, &len, NFS_MAXPATHLEN) != 0)
|
|
goto nfsmout;
|
|
if (nfsm_mtouio(&info, uiop, len) != 0)
|
|
goto nfsmout;
|
|
}
|
|
|
|
m_freem(info.nmi_mrep);
|
|
|
|
nfsmout:
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs read rpc call
|
|
* Ditto above
|
|
*/
|
|
int
|
|
nfs_readrpc(struct vnode *vp, struct uio *uiop)
|
|
{
|
|
struct nfsm_info info;
|
|
u_int32_t *tl;
|
|
struct nfsmount *nmp;
|
|
int error = 0, len, retlen, tsiz, eof, attrflag;
|
|
|
|
info.nmi_v3 = NFS_ISV3(vp);
|
|
info.nmi_errorp = &error;
|
|
|
|
eof = 0;
|
|
|
|
nmp = VFSTONFS(vp->v_mount);
|
|
tsiz = uiop->uio_resid;
|
|
if (uiop->uio_offset + tsiz > 0xffffffff && !info.nmi_v3)
|
|
return (EFBIG);
|
|
while (tsiz > 0) {
|
|
nfsstats.rpccnt[NFSPROC_READ]++;
|
|
len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(info.nmi_v3) +
|
|
NFSX_UNSIGNED * 3);
|
|
nfsm_fhtom(&info, vp, info.nmi_v3);
|
|
tl = nfsm_build(&info.nmi_mb, NFSX_UNSIGNED * 3);
|
|
if (info.nmi_v3) {
|
|
txdr_hyper(uiop->uio_offset, tl);
|
|
*(tl + 2) = txdr_unsigned(len);
|
|
} else {
|
|
*tl++ = txdr_unsigned(uiop->uio_offset);
|
|
*tl++ = txdr_unsigned(len);
|
|
*tl = 0;
|
|
}
|
|
|
|
info.nmi_procp = curproc;
|
|
info.nmi_cred = VTONFS(vp)->n_rcred;
|
|
error = nfs_request(vp, NFSPROC_READ, &info);
|
|
if (info.nmi_v3) {
|
|
if (nfsm_postop_attr(&info, &vp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
if (error) {
|
|
m_freem(info.nmi_mrep);
|
|
goto nfsmout;
|
|
}
|
|
|
|
if (info.nmi_v3) {
|
|
tl = (uint32_t *)nfsm_dissect(&info, 2 * NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
eof = fxdr_unsigned(int, *(tl + 1));
|
|
} else {
|
|
if (nfsm_loadattr(&info, &vp, NULL) != 0)
|
|
goto nfsmout;
|
|
}
|
|
|
|
if (nfsm_strsiz(&info, &retlen, nmp->nm_rsize) != 0)
|
|
goto nfsmout;
|
|
if (nfsm_mtouio(&info, uiop, retlen) != 0)
|
|
goto nfsmout;
|
|
m_freem(info.nmi_mrep);
|
|
tsiz -= retlen;
|
|
if (info.nmi_v3) {
|
|
if (eof || retlen == 0)
|
|
tsiz = 0;
|
|
} else if (retlen < len)
|
|
tsiz = 0;
|
|
}
|
|
|
|
nfsmout:
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs write call
|
|
*/
|
|
int
|
|
nfs_writerpc(struct vnode *vp, struct uio *uiop, int *iomode, int *must_commit)
|
|
{
|
|
struct nfsm_info info;
|
|
u_int32_t *tl;
|
|
int32_t backup;
|
|
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
|
|
int error = 0, len, tsiz, wccflag = NFSV3_WCCRATTR, rlen, commit;
|
|
int committed = NFSV3WRITE_FILESYNC;
|
|
|
|
info.nmi_v3 = NFS_ISV3(vp);
|
|
info.nmi_errorp = &error;
|
|
|
|
#ifdef DIAGNOSTIC
|
|
if (uiop->uio_iovcnt != 1)
|
|
panic("nfs: writerpc iovcnt > 1");
|
|
#endif
|
|
*must_commit = 0;
|
|
tsiz = uiop->uio_resid;
|
|
if (uiop->uio_offset + tsiz > 0xffffffff && !info.nmi_v3)
|
|
return (EFBIG);
|
|
while (tsiz > 0) {
|
|
nfsstats.rpccnt[NFSPROC_WRITE]++;
|
|
len = (tsiz > nmp->nm_wsize) ? nmp->nm_wsize : tsiz;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(info.nmi_v3)
|
|
+ 5 * NFSX_UNSIGNED + nfsm_rndup(len));
|
|
nfsm_fhtom(&info, vp, info.nmi_v3);
|
|
if (info.nmi_v3) {
|
|
tl = nfsm_build(&info.nmi_mb, 5 * NFSX_UNSIGNED);
|
|
txdr_hyper(uiop->uio_offset, tl);
|
|
tl += 2;
|
|
*tl++ = txdr_unsigned(len);
|
|
*tl++ = txdr_unsigned(*iomode);
|
|
*tl = txdr_unsigned(len);
|
|
} else {
|
|
u_int32_t x;
|
|
|
|
tl = nfsm_build(&info.nmi_mb, 4 * NFSX_UNSIGNED);
|
|
/* Set both "begin" and "current" to non-garbage. */
|
|
x = txdr_unsigned((u_int32_t)uiop->uio_offset);
|
|
*tl++ = x; /* "begin offset" */
|
|
*tl++ = x; /* "current offset" */
|
|
x = txdr_unsigned(len);
|
|
*tl++ = x; /* total to this offset */
|
|
*tl = x; /* size of this write */
|
|
|
|
}
|
|
nfsm_uiotombuf(&info.nmi_mb, uiop, len);
|
|
|
|
info.nmi_procp = curproc;
|
|
info.nmi_cred = VTONFS(vp)->n_wcred;
|
|
error = nfs_request(vp, NFSPROC_WRITE, &info);
|
|
if (info.nmi_v3) {
|
|
wccflag = NFSV3_WCCCHK;
|
|
if (nfsm_wcc_data(&info, &vp, &wccflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
|
|
if (error) {
|
|
m_freem(info.nmi_mrep);
|
|
goto nfsmout;
|
|
}
|
|
|
|
if (info.nmi_v3) {
|
|
wccflag = NFSV3_WCCCHK;
|
|
tl = (uint32_t *)nfsm_dissect(&info,
|
|
2 * NFSX_UNSIGNED + NFSX_V3WRITEVERF);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
rlen = fxdr_unsigned(int, *tl++);
|
|
if (rlen <= 0) {
|
|
error = NFSERR_IO;
|
|
break;
|
|
} else if (rlen < len) {
|
|
backup = len - rlen;
|
|
uiop->uio_iov->iov_base =
|
|
(char *)uiop->uio_iov->iov_base -
|
|
backup;
|
|
uiop->uio_iov->iov_len += backup;
|
|
uiop->uio_offset -= backup;
|
|
uiop->uio_resid += backup;
|
|
len = rlen;
|
|
}
|
|
commit = fxdr_unsigned(int, *tl++);
|
|
|
|
/*
|
|
* Return the lowest commitment level
|
|
* obtained by any of the RPCs.
|
|
*/
|
|
if (committed == NFSV3WRITE_FILESYNC)
|
|
committed = commit;
|
|
else if (committed == NFSV3WRITE_DATASYNC &&
|
|
commit == NFSV3WRITE_UNSTABLE)
|
|
committed = commit;
|
|
if ((nmp->nm_flag & NFSMNT_HASWRITEVERF) == 0) {
|
|
bcopy(tl, nmp->nm_verf,
|
|
NFSX_V3WRITEVERF);
|
|
nmp->nm_flag |= NFSMNT_HASWRITEVERF;
|
|
} else if (bcmp(tl,
|
|
nmp->nm_verf, NFSX_V3WRITEVERF)) {
|
|
*must_commit = 1;
|
|
bcopy(tl, nmp->nm_verf,
|
|
NFSX_V3WRITEVERF);
|
|
}
|
|
} else {
|
|
if (nfsm_loadattr(&info, &vp, NULL) != 0)
|
|
goto nfsmout;
|
|
}
|
|
if (wccflag)
|
|
VTONFS(vp)->n_mtime = VTONFS(vp)->n_vattr.va_mtime;
|
|
m_freem(info.nmi_mrep);
|
|
tsiz -= len;
|
|
}
|
|
nfsmout:
|
|
*iomode = committed;
|
|
if (error)
|
|
uiop->uio_resid = tsiz;
|
|
return (error);
|
|
}
|
|
|
|
static inline int
|
|
nfsm_mtofh(struct nfsm_info *infop, struct vnode *dvp, struct vnode **vpp,
|
|
int *flagp)
|
|
{
|
|
struct nfsnode *ttnp;
|
|
nfsfh_t *ttfhp;
|
|
int ttfhsize;
|
|
uint32_t *tl;
|
|
int error;
|
|
int flag;
|
|
|
|
if (infop->nmi_v3) {
|
|
tl = (uint32_t *)nfsm_dissect(infop, NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
return 1;
|
|
flag = fxdr_unsigned(int, *tl);
|
|
} else
|
|
flag = 1;
|
|
if (flag) {
|
|
if ((ttfhp = nfsm_getfh(infop, &ttfhsize, infop->nmi_v3)) ==
|
|
NULL) {
|
|
return 1;
|
|
}
|
|
error = nfs_nget(dvp->v_mount, ttfhp, ttfhsize, &ttnp);
|
|
if (error != 0) {
|
|
m_freem(infop->nmi_mrep);
|
|
*infop->nmi_errorp = error;
|
|
return error;
|
|
}
|
|
*vpp = NFSTOV(ttnp);
|
|
}
|
|
if (infop->nmi_v3) {
|
|
tl = (uint32_t *)nfsm_dissect(infop, NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
return 1;
|
|
if (flag)
|
|
flag = fxdr_unsigned(int, *tl);
|
|
else if (fxdr_unsigned(int, *tl)) {
|
|
if (nfsm_adv(infop, NFSX_V3FATTR) != 0)
|
|
return 1;
|
|
}
|
|
}
|
|
if (flag) {
|
|
if (nfsm_loadattr(infop, vpp, NULL) != 0)
|
|
return 1;
|
|
}
|
|
*flagp = flag;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* nfs mknod rpc
|
|
* For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the
|
|
* mode set to specify the file type and the size field for rdev.
|
|
*/
|
|
int
|
|
nfs_mknodrpc(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp,
|
|
struct vattr *vap)
|
|
{
|
|
struct nfsv2_sattr *sp;
|
|
struct nfsm_info info;
|
|
u_int32_t *tl;
|
|
struct vnode *newvp = NULL;
|
|
struct nfsnode *np = NULL;
|
|
int error = 0, wccflag = NFSV3_WCCRATTR, gotvp = 0;
|
|
u_int32_t rdev;
|
|
|
|
info.nmi_v3 = NFS_ISV3(dvp);
|
|
info.nmi_errorp = &error;
|
|
|
|
if (vap->va_type == VCHR || vap->va_type == VBLK)
|
|
rdev = txdr_unsigned(vap->va_rdev);
|
|
else if (vap->va_type == VFIFO || vap->va_type == VSOCK)
|
|
rdev = nfs_xdrneg1;
|
|
else {
|
|
VOP_ABORTOP(dvp, cnp);
|
|
return (EOPNOTSUPP);
|
|
}
|
|
nfsstats.rpccnt[NFSPROC_MKNOD]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(info.nmi_v3) +
|
|
4 * NFSX_UNSIGNED + nfsm_rndup(cnp->cn_namelen) +
|
|
NFSX_SATTR(info.nmi_v3));
|
|
nfsm_fhtom(&info, dvp, info.nmi_v3);
|
|
if (nfsm_strtom(&info, cnp->cn_nameptr, cnp->cn_namelen,
|
|
NFS_MAXNAMLEN) != 0)
|
|
goto nfsmout;
|
|
|
|
if (info.nmi_v3) {
|
|
tl = nfsm_build(&info.nmi_mb, NFSX_UNSIGNED);
|
|
*tl++ = vtonfsv3_type(vap->va_type);
|
|
nfsm_v3attrbuild(&info.nmi_mb, vap, 0);
|
|
if (vap->va_type == VCHR || vap->va_type == VBLK) {
|
|
tl = nfsm_build(&info.nmi_mb, 2 * NFSX_UNSIGNED);
|
|
*tl++ = txdr_unsigned(major(vap->va_rdev));
|
|
*tl = txdr_unsigned(minor(vap->va_rdev));
|
|
}
|
|
} else {
|
|
sp = nfsm_build(&info.nmi_mb, NFSX_V2SATTR);
|
|
sp->sa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode);
|
|
sp->sa_uid = nfs_xdrneg1;
|
|
sp->sa_gid = nfs_xdrneg1;
|
|
sp->sa_size = rdev;
|
|
txdr_nfsv2time(&vap->va_atime, &sp->sa_atime);
|
|
txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime);
|
|
}
|
|
|
|
KASSERT(cnp->cn_proc == curproc);
|
|
info.nmi_procp = cnp->cn_proc;
|
|
info.nmi_cred = cnp->cn_cred;
|
|
error = nfs_request(dvp, NFSPROC_MKNOD, &info);
|
|
if (!error) {
|
|
if (nfsm_mtofh(&info, dvp, &newvp, &gotvp) != 0)
|
|
goto nfsmout;
|
|
if (!gotvp) {
|
|
error = nfs_lookitup(dvp, cnp->cn_nameptr,
|
|
cnp->cn_namelen, cnp->cn_cred, cnp->cn_proc, &np);
|
|
if (!error)
|
|
newvp = NFSTOV(np);
|
|
}
|
|
}
|
|
if (info.nmi_v3) {
|
|
if (nfsm_wcc_data(&info, &dvp, &wccflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
|
|
nfsmout:
|
|
if (error) {
|
|
if (newvp)
|
|
vput(newvp);
|
|
} else {
|
|
if (cnp->cn_flags & MAKEENTRY)
|
|
nfs_cache_enter(dvp, newvp, cnp);
|
|
*vpp = newvp;
|
|
}
|
|
pool_put(&namei_pool, cnp->cn_pnbuf);
|
|
VTONFS(dvp)->n_flag |= NMODIFIED;
|
|
if (!wccflag)
|
|
NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp));
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs mknod vop
|
|
* just call nfs_mknodrpc() to do the work.
|
|
*/
|
|
int
|
|
nfs_mknod(void *v)
|
|
{
|
|
struct vop_mknod_args *ap = v;
|
|
struct vnode *newvp;
|
|
int error;
|
|
|
|
error = nfs_mknodrpc(ap->a_dvp, &newvp, ap->a_cnp, ap->a_vap);
|
|
if (!error)
|
|
vput(newvp);
|
|
|
|
VN_KNOTE(ap->a_dvp, NOTE_WRITE);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
nfs_create(void *v)
|
|
{
|
|
struct vop_create_args *ap = v;
|
|
struct vnode *dvp = ap->a_dvp;
|
|
struct vattr *vap = ap->a_vap;
|
|
struct componentname *cnp = ap->a_cnp;
|
|
struct nfsv2_sattr *sp;
|
|
struct nfsm_info info;
|
|
struct timespec ts;
|
|
u_int32_t *tl;
|
|
struct nfsnode *np = NULL;
|
|
struct vnode *newvp = NULL;
|
|
int error = 0, wccflag = NFSV3_WCCRATTR, gotvp = 0, fmode = 0;
|
|
|
|
info.nmi_v3 = NFS_ISV3(dvp);
|
|
info.nmi_errorp = &error;
|
|
|
|
/*
|
|
* Oops, not for me..
|
|
*/
|
|
if (vap->va_type == VSOCK)
|
|
return (nfs_mknodrpc(dvp, ap->a_vpp, cnp, vap));
|
|
|
|
if (vap->va_vaflags & VA_EXCLUSIVE)
|
|
fmode |= O_EXCL;
|
|
|
|
again:
|
|
nfsstats.rpccnt[NFSPROC_CREATE]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(info.nmi_v3) +
|
|
2 * NFSX_UNSIGNED + nfsm_rndup(cnp->cn_namelen) +
|
|
NFSX_SATTR(info.nmi_v3));
|
|
nfsm_fhtom(&info, dvp, info.nmi_v3);
|
|
if (nfsm_strtom(&info, cnp->cn_nameptr, cnp->cn_namelen,
|
|
NFS_MAXNAMLEN) != 0)
|
|
goto nfsmout;
|
|
if (info.nmi_v3) {
|
|
tl = nfsm_build(&info.nmi_mb, NFSX_UNSIGNED);
|
|
if (fmode & O_EXCL) {
|
|
*tl = txdr_unsigned(NFSV3CREATE_EXCLUSIVE);
|
|
tl = nfsm_build(&info.nmi_mb, NFSX_V3CREATEVERF);
|
|
arc4random_buf(tl, sizeof(*tl) * 2);
|
|
} else {
|
|
*tl = txdr_unsigned(NFSV3CREATE_UNCHECKED);
|
|
nfsm_v3attrbuild(&info.nmi_mb, vap, 0);
|
|
}
|
|
} else {
|
|
sp = nfsm_build(&info.nmi_mb, NFSX_V2SATTR);
|
|
sp->sa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode);
|
|
sp->sa_uid = nfs_xdrneg1;
|
|
sp->sa_gid = nfs_xdrneg1;
|
|
sp->sa_size = 0;
|
|
txdr_nfsv2time(&vap->va_atime, &sp->sa_atime);
|
|
txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime);
|
|
}
|
|
|
|
KASSERT(cnp->cn_proc == curproc);
|
|
info.nmi_procp = cnp->cn_proc;
|
|
info.nmi_cred = cnp->cn_cred;
|
|
error = nfs_request(dvp, NFSPROC_CREATE, &info);
|
|
if (!error) {
|
|
if (nfsm_mtofh(&info, dvp, &newvp, &gotvp) != 0)
|
|
goto nfsmout;
|
|
if (!gotvp) {
|
|
error = nfs_lookitup(dvp, cnp->cn_nameptr,
|
|
cnp->cn_namelen, cnp->cn_cred, cnp->cn_proc, &np);
|
|
if (!error)
|
|
newvp = NFSTOV(np);
|
|
}
|
|
}
|
|
if (info.nmi_v3) {
|
|
if (nfsm_wcc_data(&info, &dvp, &wccflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
|
|
nfsmout:
|
|
if (error) {
|
|
if (newvp) {
|
|
vput(newvp);
|
|
newvp = NULL;
|
|
}
|
|
if (info.nmi_v3 && (fmode & O_EXCL) && error == NFSERR_NOTSUPP) {
|
|
fmode &= ~O_EXCL;
|
|
goto again;
|
|
}
|
|
} else if (info.nmi_v3 && (fmode & O_EXCL)) {
|
|
getnanotime(&ts);
|
|
if (vap->va_atime.tv_nsec == VNOVAL)
|
|
vap->va_atime = ts;
|
|
if (vap->va_mtime.tv_nsec == VNOVAL)
|
|
vap->va_mtime = ts;
|
|
error = nfs_setattrrpc(newvp, vap, cnp->cn_cred, cnp->cn_proc);
|
|
}
|
|
if (!error) {
|
|
if (cnp->cn_flags & MAKEENTRY)
|
|
nfs_cache_enter(dvp, newvp, cnp);
|
|
*ap->a_vpp = newvp;
|
|
}
|
|
pool_put(&namei_pool, cnp->cn_pnbuf);
|
|
VTONFS(dvp)->n_flag |= NMODIFIED;
|
|
if (!wccflag)
|
|
NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp));
|
|
VN_KNOTE(ap->a_dvp, NOTE_WRITE);
|
|
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 nfs_sillyrename() to set it up
|
|
* else
|
|
* do the remove rpc
|
|
*/
|
|
int
|
|
nfs_remove(void *v)
|
|
{
|
|
struct vop_remove_args *ap = v;
|
|
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;
|
|
|
|
#ifdef DIAGNOSTIC
|
|
if ((cnp->cn_flags & HASBUF) == 0)
|
|
panic("nfs_remove: no name");
|
|
if (vp->v_usecount < 1)
|
|
panic("nfs_remove: bad v_usecount");
|
|
#endif
|
|
if (vp->v_type == VDIR)
|
|
error = EPERM;
|
|
else if (vp->v_usecount == 1 || (np->n_sillyrename &&
|
|
VOP_GETATTR(vp, &vattr, cnp->cn_cred, cnp->cn_proc) == 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_proc);
|
|
/* Do the rpc */
|
|
if (error != EINTR)
|
|
error = nfs_removerpc(dvp, cnp->cn_nameptr,
|
|
cnp->cn_namelen, cnp->cn_cred, cnp->cn_proc);
|
|
/*
|
|
* 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 = nfs_sillyrename(dvp, vp, cnp);
|
|
pool_put(&namei_pool, cnp->cn_pnbuf);
|
|
NFS_INVALIDATE_ATTRCACHE(np);
|
|
VN_KNOTE(vp, NOTE_DELETE);
|
|
VN_KNOTE(dvp, NOTE_WRITE);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs file remove rpc called from nfs_inactive
|
|
*/
|
|
int
|
|
nfs_removeit(struct sillyrename *sp)
|
|
{
|
|
KASSERT(VOP_ISLOCKED(sp->s_dvp));
|
|
/*
|
|
* Make sure that the directory vnode is still valid.
|
|
*
|
|
* NFS can potentially try to nuke a silly *after* the directory
|
|
* has already been pushed out on a forced unmount. Since the silly
|
|
* is going to go away anyway, this is fine.
|
|
*/
|
|
if (sp->s_dvp->v_type == VBAD)
|
|
return (0);
|
|
return (nfs_removerpc(sp->s_dvp, sp->s_name, sp->s_namlen, sp->s_cred,
|
|
NULL));
|
|
}
|
|
|
|
/*
|
|
* Nfs remove rpc, called from nfs_remove() and nfs_removeit().
|
|
*/
|
|
int
|
|
nfs_removerpc(struct vnode *dvp, char *name, int namelen, struct ucred *cred,
|
|
struct proc *proc)
|
|
{
|
|
struct nfsm_info info;
|
|
int error = 0, wccflag = NFSV3_WCCRATTR;
|
|
|
|
info.nmi_v3 = NFS_ISV3(dvp);
|
|
info.nmi_errorp = &error;
|
|
|
|
nfsstats.rpccnt[NFSPROC_REMOVE]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(info.nmi_v3) +
|
|
NFSX_UNSIGNED + nfsm_rndup(namelen));
|
|
nfsm_fhtom(&info, dvp, info.nmi_v3);
|
|
if (nfsm_strtom(&info, name, namelen, NFS_MAXNAMLEN) != 0)
|
|
goto nfsmout;
|
|
|
|
info.nmi_procp = proc;
|
|
info.nmi_cred = cred;
|
|
error = nfs_request(dvp, NFSPROC_REMOVE, &info);
|
|
if (info.nmi_v3) {
|
|
if (nfsm_wcc_data(&info, &dvp, &wccflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
|
|
nfsmout:
|
|
VTONFS(dvp)->n_flag |= NMODIFIED;
|
|
if (!wccflag)
|
|
NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp));
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs file rename call
|
|
*/
|
|
int
|
|
nfs_rename(void *v)
|
|
{
|
|
struct vop_rename_args *ap = v;
|
|
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;
|
|
|
|
#ifdef DIAGNOSTIC
|
|
if ((tcnp->cn_flags & HASBUF) == 0 ||
|
|
(fcnp->cn_flags & HASBUF) == 0)
|
|
panic("nfs_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 the tvp exists and is in use, sillyrename it before doing the
|
|
* rename of the new file over it.
|
|
*/
|
|
if (tvp && tvp->v_usecount > 1 && !VTONFS(tvp)->n_sillyrename &&
|
|
tvp->v_type != VDIR && !nfs_sillyrename(tdvp, tvp, tcnp)) {
|
|
VN_KNOTE(tvp, NOTE_DELETE);
|
|
vput(tvp);
|
|
tvp = NULL;
|
|
}
|
|
|
|
error = nfs_renamerpc(fdvp, fcnp->cn_nameptr, fcnp->cn_namelen,
|
|
tdvp, tcnp->cn_nameptr, tcnp->cn_namelen, tcnp->cn_cred,
|
|
tcnp->cn_proc);
|
|
|
|
VN_KNOTE(fdvp, NOTE_WRITE);
|
|
VN_KNOTE(tdvp, NOTE_WRITE);
|
|
|
|
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 nfs_remove() above
|
|
*/
|
|
int
|
|
nfs_renameit(struct vnode *sdvp, struct componentname *scnp,
|
|
struct sillyrename *sp)
|
|
{
|
|
return (nfs_renamerpc(sdvp, scnp->cn_nameptr, scnp->cn_namelen,
|
|
sdvp, sp->s_name, sp->s_namlen, scnp->cn_cred, curproc));
|
|
}
|
|
|
|
/*
|
|
* Do an nfs rename rpc. Called from nfs_rename() and nfs_renameit().
|
|
*/
|
|
int
|
|
nfs_renamerpc(struct vnode *fdvp, char *fnameptr, int fnamelen,
|
|
struct vnode *tdvp, char *tnameptr, int tnamelen, struct ucred *cred,
|
|
struct proc *proc)
|
|
{
|
|
struct nfsm_info info;
|
|
int error = 0, fwccflag = NFSV3_WCCRATTR, twccflag = NFSV3_WCCRATTR;
|
|
|
|
info.nmi_v3 = NFS_ISV3(fdvp);
|
|
info.nmi_errorp = &error;
|
|
|
|
nfsstats.rpccnt[NFSPROC_RENAME]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead((NFSX_FH(info.nmi_v3) +
|
|
NFSX_UNSIGNED) * 2 + nfsm_rndup(fnamelen) + nfsm_rndup(tnamelen));
|
|
nfsm_fhtom(&info, fdvp, info.nmi_v3);
|
|
if (nfsm_strtom(&info, fnameptr, fnamelen, NFS_MAXNAMLEN) != 0)
|
|
goto nfsmout;
|
|
nfsm_fhtom(&info, tdvp, info.nmi_v3);
|
|
if (nfsm_strtom(&info, tnameptr, tnamelen, NFS_MAXNAMLEN) != 0)
|
|
goto nfsmout;
|
|
|
|
info.nmi_procp = proc;
|
|
info.nmi_cred = cred;
|
|
error = nfs_request(fdvp, NFSPROC_RENAME, &info);
|
|
if (info.nmi_v3) {
|
|
if (nfsm_wcc_data(&info, &fdvp, &fwccflag) != 0)
|
|
goto nfsmout;
|
|
if (nfsm_wcc_data(&info, &tdvp, &twccflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
|
|
nfsmout:
|
|
VTONFS(fdvp)->n_flag |= NMODIFIED;
|
|
VTONFS(tdvp)->n_flag |= NMODIFIED;
|
|
if (!fwccflag)
|
|
NFS_INVALIDATE_ATTRCACHE(VTONFS(fdvp));
|
|
if (!twccflag)
|
|
NFS_INVALIDATE_ATTRCACHE(VTONFS(tdvp));
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs hard link create call
|
|
*/
|
|
int
|
|
nfs_link(void *v)
|
|
{
|
|
struct vop_link_args *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct vnode *dvp = ap->a_dvp;
|
|
struct componentname *cnp = ap->a_cnp;
|
|
struct nfsm_info info;
|
|
int error = 0, wccflag = NFSV3_WCCRATTR, attrflag = 0;
|
|
|
|
info.nmi_v3 = NFS_ISV3(vp);
|
|
info.nmi_errorp = &error;
|
|
|
|
error = vn_lock(vp, LK_EXCLUSIVE);
|
|
if (error != 0) {
|
|
VOP_ABORTOP(dvp, cnp);
|
|
vput(dvp);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* 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_proc);
|
|
|
|
nfsstats.rpccnt[NFSPROC_LINK]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(2 * NFSX_FH(info.nmi_v3) +
|
|
NFSX_UNSIGNED + nfsm_rndup(cnp->cn_namelen));
|
|
nfsm_fhtom(&info, vp, info.nmi_v3);
|
|
nfsm_fhtom(&info, dvp, info.nmi_v3);
|
|
if (nfsm_strtom(&info, cnp->cn_nameptr, cnp->cn_namelen,
|
|
NFS_MAXNAMLEN) != 0)
|
|
goto nfsmout;
|
|
|
|
info.nmi_procp = cnp->cn_proc;
|
|
info.nmi_cred = cnp->cn_cred;
|
|
error = nfs_request(vp, NFSPROC_LINK, &info);
|
|
if (info.nmi_v3) {
|
|
if (nfsm_postop_attr(&info, &vp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
if (nfsm_wcc_data(&info, &dvp, &wccflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
nfsmout:
|
|
pool_put(&namei_pool, cnp->cn_pnbuf);
|
|
VTONFS(dvp)->n_flag |= NMODIFIED;
|
|
if (!attrflag)
|
|
NFS_INVALIDATE_ATTRCACHE(VTONFS(vp));
|
|
if (!wccflag)
|
|
NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp));
|
|
|
|
VN_KNOTE(vp, NOTE_LINK);
|
|
VN_KNOTE(dvp, NOTE_WRITE);
|
|
VOP_UNLOCK(vp);
|
|
vput(dvp);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs symbolic link create call
|
|
*/
|
|
int
|
|
nfs_symlink(void *v)
|
|
{
|
|
struct vop_symlink_args *ap = v;
|
|
struct vnode *dvp = ap->a_dvp;
|
|
struct vattr *vap = ap->a_vap;
|
|
struct componentname *cnp = ap->a_cnp;
|
|
struct nfsv2_sattr *sp;
|
|
struct nfsm_info info;
|
|
int slen, error = 0, wccflag = NFSV3_WCCRATTR, gotvp;
|
|
struct vnode *newvp = NULL;
|
|
|
|
info.nmi_v3 = NFS_ISV3(dvp);
|
|
info.nmi_errorp = &error;
|
|
|
|
nfsstats.rpccnt[NFSPROC_SYMLINK]++;
|
|
slen = strlen(ap->a_target);
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(info.nmi_v3) +
|
|
2 * NFSX_UNSIGNED + nfsm_rndup(cnp->cn_namelen) + nfsm_rndup(slen) +
|
|
NFSX_SATTR(info.nmi_v3));
|
|
nfsm_fhtom(&info, dvp, info.nmi_v3);
|
|
if (nfsm_strtom(&info, cnp->cn_nameptr, cnp->cn_namelen,
|
|
NFS_MAXNAMLEN) != 0)
|
|
goto nfsmout;
|
|
if (info.nmi_v3)
|
|
nfsm_v3attrbuild(&info.nmi_mb, vap, 0);
|
|
if (nfsm_strtom(&info, ap->a_target, slen, NFS_MAXPATHLEN) != 0)
|
|
goto nfsmout;
|
|
if (!info.nmi_v3) {
|
|
sp = nfsm_build(&info.nmi_mb, NFSX_V2SATTR);
|
|
sp->sa_mode = vtonfsv2_mode(VLNK, vap->va_mode);
|
|
sp->sa_uid = nfs_xdrneg1;
|
|
sp->sa_gid = nfs_xdrneg1;
|
|
sp->sa_size = nfs_xdrneg1;
|
|
txdr_nfsv2time(&vap->va_atime, &sp->sa_atime);
|
|
txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime);
|
|
}
|
|
|
|
info.nmi_procp = cnp->cn_proc;
|
|
info.nmi_cred = cnp->cn_cred;
|
|
error = nfs_request(dvp, NFSPROC_SYMLINK, &info);
|
|
if (info.nmi_v3) {
|
|
if (!error) {
|
|
if (nfsm_mtofh(&info, dvp, &newvp, &gotvp) != 0)
|
|
goto nfsmout;
|
|
}
|
|
if (nfsm_wcc_data(&info, &dvp, &wccflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
|
|
nfsmout:
|
|
if (newvp)
|
|
vput(newvp);
|
|
pool_put(&namei_pool, cnp->cn_pnbuf);
|
|
VTONFS(dvp)->n_flag |= NMODIFIED;
|
|
if (!wccflag)
|
|
NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp));
|
|
VN_KNOTE(dvp, NOTE_WRITE);
|
|
vput(dvp);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs make dir call
|
|
*/
|
|
int
|
|
nfs_mkdir(void *v)
|
|
{
|
|
struct vop_mkdir_args *ap = v;
|
|
struct vnode *dvp = ap->a_dvp;
|
|
struct vattr *vap = ap->a_vap;
|
|
struct componentname *cnp = ap->a_cnp;
|
|
struct nfsv2_sattr *sp;
|
|
struct nfsm_info info;
|
|
int len;
|
|
struct nfsnode *np = NULL;
|
|
struct vnode *newvp = NULL;
|
|
int error = 0, wccflag = NFSV3_WCCRATTR;
|
|
int gotvp = 0;
|
|
|
|
info.nmi_v3 = NFS_ISV3(dvp);
|
|
info.nmi_errorp = &error;
|
|
|
|
len = cnp->cn_namelen;
|
|
nfsstats.rpccnt[NFSPROC_MKDIR]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(info.nmi_v3) +
|
|
NFSX_UNSIGNED + nfsm_rndup(len) + NFSX_SATTR(info.nmi_v3));
|
|
nfsm_fhtom(&info, dvp, info.nmi_v3);
|
|
if (nfsm_strtom(&info, cnp->cn_nameptr, len, NFS_MAXNAMLEN) != 0)
|
|
goto nfsmout;
|
|
|
|
if (info.nmi_v3) {
|
|
nfsm_v3attrbuild(&info.nmi_mb, vap, 0);
|
|
} else {
|
|
sp = nfsm_build(&info.nmi_mb, NFSX_V2SATTR);
|
|
sp->sa_mode = vtonfsv2_mode(VDIR, vap->va_mode);
|
|
sp->sa_uid = nfs_xdrneg1;
|
|
sp->sa_gid = nfs_xdrneg1;
|
|
sp->sa_size = nfs_xdrneg1;
|
|
txdr_nfsv2time(&vap->va_atime, &sp->sa_atime);
|
|
txdr_nfsv2time(&vap->va_mtime, &sp->sa_mtime);
|
|
}
|
|
|
|
info.nmi_procp = cnp->cn_proc;
|
|
info.nmi_cred = cnp->cn_cred;
|
|
error = nfs_request(dvp, NFSPROC_MKDIR, &info);
|
|
if (!error) {
|
|
if (nfsm_mtofh(&info, dvp, &newvp, &gotvp) != 0)
|
|
goto nfsmout;
|
|
}
|
|
if (info.nmi_v3) {
|
|
if (nfsm_wcc_data(&info, &dvp, &wccflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
|
|
nfsmout:
|
|
VTONFS(dvp)->n_flag |= NMODIFIED;
|
|
if (!wccflag)
|
|
NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp));
|
|
|
|
if (error == 0 && newvp == NULL) {
|
|
error = nfs_lookitup(dvp, cnp->cn_nameptr, len, cnp->cn_cred,
|
|
cnp->cn_proc, &np);
|
|
if (!error) {
|
|
newvp = NFSTOV(np);
|
|
if (newvp->v_type != VDIR)
|
|
error = EEXIST;
|
|
}
|
|
}
|
|
if (error) {
|
|
if (newvp)
|
|
vput(newvp);
|
|
} else {
|
|
VN_KNOTE(dvp, NOTE_WRITE|NOTE_LINK);
|
|
if (cnp->cn_flags & MAKEENTRY)
|
|
nfs_cache_enter(dvp, newvp, cnp);
|
|
*ap->a_vpp = newvp;
|
|
}
|
|
pool_put(&namei_pool, cnp->cn_pnbuf);
|
|
vput(dvp);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* nfs remove directory call
|
|
*/
|
|
int
|
|
nfs_rmdir(void *v)
|
|
{
|
|
struct vop_rmdir_args *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct vnode *dvp = ap->a_dvp;
|
|
struct componentname *cnp = ap->a_cnp;
|
|
struct nfsm_info info;
|
|
int error = 0, wccflag = NFSV3_WCCRATTR;
|
|
|
|
info.nmi_v3 = NFS_ISV3(dvp);
|
|
info.nmi_errorp = &error;
|
|
|
|
nfsstats.rpccnt[NFSPROC_RMDIR]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(info.nmi_v3) +
|
|
NFSX_UNSIGNED + nfsm_rndup(cnp->cn_namelen));
|
|
nfsm_fhtom(&info, dvp, info.nmi_v3);
|
|
if (nfsm_strtom(&info, cnp->cn_nameptr, cnp->cn_namelen,
|
|
NFS_MAXNAMLEN) != 0)
|
|
goto nfsmout;
|
|
|
|
info.nmi_procp = cnp->cn_proc;
|
|
info.nmi_cred = cnp->cn_cred;
|
|
error = nfs_request(dvp, NFSPROC_RMDIR, &info);
|
|
if (info.nmi_v3) {
|
|
if (nfsm_wcc_data(&info, &dvp, &wccflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
|
|
nfsmout:
|
|
pool_put(&namei_pool, cnp->cn_pnbuf);
|
|
VTONFS(dvp)->n_flag |= NMODIFIED;
|
|
if (!wccflag)
|
|
NFS_INVALIDATE_ATTRCACHE(VTONFS(dvp));
|
|
|
|
VN_KNOTE(dvp, NOTE_WRITE|NOTE_LINK);
|
|
VN_KNOTE(vp, NOTE_DELETE);
|
|
|
|
cache_purge(vp);
|
|
vput(vp);
|
|
vput(dvp);
|
|
/*
|
|
* Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
|
|
*/
|
|
if (error == ENOENT)
|
|
error = 0;
|
|
return (error);
|
|
}
|
|
|
|
|
|
/*
|
|
* The readdir logic below has a big design bug. It stores the NFS cookie in
|
|
* the returned uio->uio_offset but does not store the verifier (it cannot).
|
|
* Instead, the code stores the verifier in the nfsnode and applies that
|
|
* verifies to all cookies, no matter what verifier was originally with
|
|
* the cookie.
|
|
*
|
|
* From a practical standpoint, this is not a problem since almost all
|
|
* NFS servers do not change the validity of cookies across deletes
|
|
* and inserts.
|
|
*/
|
|
|
|
struct nfs_dirent {
|
|
u_int32_t cookie[2];
|
|
struct dirent dirent;
|
|
};
|
|
|
|
#define NFS_DIRHDSIZ (sizeof (struct nfs_dirent) - (MAXNAMLEN + 1))
|
|
#define NFS_DIRENT_OVERHEAD offsetof(struct nfs_dirent, dirent)
|
|
|
|
/*
|
|
* nfs readdir call
|
|
*/
|
|
int
|
|
nfs_readdir(void *v)
|
|
{
|
|
struct vop_readdir_args *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct nfsnode *np = VTONFS(vp);
|
|
struct uio *uio = ap->a_uio;
|
|
int tresid, error = 0;
|
|
struct vattr vattr;
|
|
int cnt;
|
|
u_int64_t newoff = uio->uio_offset;
|
|
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
|
|
struct uio readdir_uio;
|
|
struct iovec readdir_iovec;
|
|
struct proc * p = uio->uio_procp;
|
|
int done = 0, eof = 0;
|
|
struct ucred *cred = ap->a_cred;
|
|
void *data;
|
|
|
|
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) {
|
|
if (VOP_GETATTR(vp, &vattr, ap->a_cred, uio->uio_procp) == 0 &&
|
|
timespeccmp(&np->n_mtime, &vattr.va_mtime, ==)) {
|
|
nfsstats.direofcache_hits++;
|
|
*ap->a_eofflag = 1;
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
if (uio->uio_resid < NFS_FABLKSIZE)
|
|
return (EINVAL);
|
|
|
|
tresid = uio->uio_resid;
|
|
|
|
if (uio->uio_rw != UIO_READ)
|
|
return (EINVAL);
|
|
|
|
if ((nmp->nm_flag & (NFSMNT_NFSV3 | NFSMNT_GOTFSINFO)) == NFSMNT_NFSV3)
|
|
(void)nfs_fsinfo(nmp, vp, cred, p);
|
|
|
|
cnt = 5;
|
|
|
|
/* M_ZERO to avoid leaking kernel data in dirent padding */
|
|
data = malloc(NFS_DIRBLKSIZ, M_TEMP, M_WAITOK|M_ZERO);
|
|
do {
|
|
struct nfs_dirent *ndp = data;
|
|
|
|
readdir_iovec.iov_len = NFS_DIRBLKSIZ;
|
|
readdir_iovec.iov_base = data;
|
|
readdir_uio.uio_offset = newoff;
|
|
readdir_uio.uio_iov = &readdir_iovec;
|
|
readdir_uio.uio_iovcnt = 1;
|
|
readdir_uio.uio_segflg = UIO_SYSSPACE;
|
|
readdir_uio.uio_rw = UIO_READ;
|
|
readdir_uio.uio_resid = NFS_DIRBLKSIZ;
|
|
readdir_uio.uio_procp = curproc;
|
|
|
|
if (nmp->nm_flag & NFSMNT_RDIRPLUS) {
|
|
error = nfs_readdirplusrpc(vp, &readdir_uio, cred,
|
|
&eof, p);
|
|
if (error == NFSERR_NOTSUPP)
|
|
nmp->nm_flag &= ~NFSMNT_RDIRPLUS;
|
|
}
|
|
if ((nmp->nm_flag & NFSMNT_RDIRPLUS) == 0)
|
|
error = nfs_readdirrpc(vp, &readdir_uio, cred, &eof);
|
|
|
|
if (error == NFSERR_BAD_COOKIE)
|
|
error = EINVAL;
|
|
|
|
while (error == 0 &&
|
|
ndp < (struct nfs_dirent *)readdir_iovec.iov_base) {
|
|
struct dirent *dp = &ndp->dirent;
|
|
int reclen = dp->d_reclen;
|
|
|
|
dp->d_reclen -= NFS_DIRENT_OVERHEAD;
|
|
dp->d_off = fxdr_hyper(&ndp->cookie[0]);
|
|
|
|
if (uio->uio_resid < dp->d_reclen) {
|
|
eof = 0;
|
|
done = 1;
|
|
break;
|
|
}
|
|
|
|
if ((error = uiomove(dp, dp->d_reclen, uio)))
|
|
break;
|
|
|
|
newoff = fxdr_hyper(&ndp->cookie[0]);
|
|
|
|
ndp = (struct nfs_dirent *)((u_int8_t *)ndp + reclen);
|
|
}
|
|
} while (!error && !done && !eof && cnt--);
|
|
|
|
free(data, M_TEMP, NFS_DIRBLKSIZ);
|
|
data = NULL;
|
|
|
|
uio->uio_offset = newoff;
|
|
|
|
if (!error && (eof || uio->uio_resid == tresid)) {
|
|
nfsstats.direofcache_misses++;
|
|
*ap->a_eofflag = 1;
|
|
return (0);
|
|
}
|
|
|
|
*ap->a_eofflag = 0;
|
|
return (error);
|
|
}
|
|
|
|
|
|
/*
|
|
* The function below stuff the cookies in after the name
|
|
*/
|
|
|
|
/*
|
|
* Readdir rpc call.
|
|
*/
|
|
int
|
|
nfs_readdirrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred,
|
|
int *end_of_directory)
|
|
{
|
|
int len, left;
|
|
struct nfs_dirent *ndp = NULL;
|
|
struct dirent *dp = NULL;
|
|
struct nfsm_info info;
|
|
u_int32_t *tl;
|
|
caddr_t cp;
|
|
nfsuint64 cookie;
|
|
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
|
|
struct nfsnode *dnp = VTONFS(vp);
|
|
u_quad_t fileno;
|
|
int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
|
|
int attrflag;
|
|
|
|
info.nmi_v3 = NFS_ISV3(vp);
|
|
info.nmi_errorp = &error;
|
|
|
|
#ifdef DIAGNOSTIC
|
|
if (uiop->uio_iovcnt != 1 ||
|
|
(uiop->uio_resid & (NFS_DIRBLKSIZ - 1)))
|
|
panic("nfs readdirrpc bad uio");
|
|
#endif
|
|
|
|
txdr_hyper(uiop->uio_offset, &cookie.nfsuquad[0]);
|
|
|
|
/*
|
|
* Loop around doing readdir rpc's of size nm_readdirsize
|
|
* truncated to a multiple of NFS_READDIRBLKSIZ.
|
|
* The stopping criteria is EOF or buffer full.
|
|
*/
|
|
while (more_dirs && bigenough) {
|
|
nfsstats.rpccnt[NFSPROC_READDIR]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(info.nmi_v3)
|
|
+ NFSX_READDIR(info.nmi_v3));
|
|
nfsm_fhtom(&info, vp, info.nmi_v3);
|
|
if (info.nmi_v3) {
|
|
tl = nfsm_build(&info.nmi_mb, 5 * NFSX_UNSIGNED);
|
|
*tl++ = cookie.nfsuquad[0];
|
|
*tl++ = cookie.nfsuquad[1];
|
|
if (cookie.nfsuquad[0] == 0 &&
|
|
cookie.nfsuquad[1] == 0) {
|
|
*tl++ = 0;
|
|
*tl++ = 0;
|
|
} else {
|
|
*tl++ = dnp->n_cookieverf.nfsuquad[0];
|
|
*tl++ = dnp->n_cookieverf.nfsuquad[1];
|
|
}
|
|
} else {
|
|
tl = nfsm_build(&info.nmi_mb, 2 * NFSX_UNSIGNED);
|
|
*tl++ = cookie.nfsuquad[1];
|
|
}
|
|
*tl = txdr_unsigned(nmp->nm_readdirsize);
|
|
|
|
info.nmi_procp = uiop->uio_procp;
|
|
info.nmi_cred = cred;
|
|
error = nfs_request(vp, NFSPROC_READDIR, &info);
|
|
if (info.nmi_v3) {
|
|
if (nfsm_postop_attr(&info, &vp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
}
|
|
|
|
if (error) {
|
|
m_freem(info.nmi_mrep);
|
|
goto nfsmout;
|
|
}
|
|
|
|
if (info.nmi_v3) {
|
|
tl = (uint32_t *)nfsm_dissect(&info, 2 * NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
dnp->n_cookieverf.nfsuquad[0] = *tl++;
|
|
dnp->n_cookieverf.nfsuquad[1] = *tl;
|
|
}
|
|
|
|
tl = (uint32_t *)nfsm_dissect(&info, NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
more_dirs = fxdr_unsigned(int, *tl);
|
|
|
|
/* loop thru the dir entries, doctoring them to dirent form */
|
|
while (more_dirs && bigenough) {
|
|
if (info.nmi_v3) {
|
|
tl = (uint32_t *)nfsm_dissect(&info,
|
|
3 * NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
fileno = fxdr_hyper(tl);
|
|
len = fxdr_unsigned(int, *(tl + 2));
|
|
} else {
|
|
tl = (uint32_t *)nfsm_dissect(&info,
|
|
2 * NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
fileno = fxdr_unsigned(u_quad_t, *tl++);
|
|
len = fxdr_unsigned(int, *tl);
|
|
}
|
|
if (len <= 0 || len > NFS_MAXNAMLEN) {
|
|
error = EBADRPC;
|
|
m_freem(info.nmi_mrep);
|
|
goto nfsmout;
|
|
}
|
|
tlen = DIRENT_RECSIZE(len) + NFS_DIRENT_OVERHEAD;
|
|
left = NFS_READDIRBLKSIZ - blksiz;
|
|
if (tlen > left) {
|
|
dp->d_reclen += left;
|
|
uiop->uio_iov->iov_base += left;
|
|
uiop->uio_iov->iov_len -= left;
|
|
uiop->uio_resid -= left;
|
|
blksiz = 0;
|
|
}
|
|
if (tlen > uiop->uio_resid)
|
|
bigenough = 0;
|
|
if (bigenough) {
|
|
ndp = (struct nfs_dirent *)
|
|
uiop->uio_iov->iov_base;
|
|
dp = &ndp->dirent;
|
|
dp->d_fileno = fileno;
|
|
dp->d_namlen = len;
|
|
dp->d_reclen = tlen;
|
|
dp->d_type = DT_UNKNOWN;
|
|
blksiz += tlen;
|
|
if (blksiz == NFS_READDIRBLKSIZ)
|
|
blksiz = 0;
|
|
uiop->uio_resid -= NFS_DIRHDSIZ;
|
|
uiop->uio_iov->iov_base =
|
|
(char *)uiop->uio_iov->iov_base +
|
|
NFS_DIRHDSIZ;
|
|
uiop->uio_iov->iov_len -= NFS_DIRHDSIZ;
|
|
if (nfsm_mtouio(&info, uiop, len) != 0)
|
|
goto nfsmout;
|
|
cp = uiop->uio_iov->iov_base;
|
|
tlen -= NFS_DIRHDSIZ + len;
|
|
*cp = '\0'; /* null terminate */
|
|
uiop->uio_iov->iov_base += tlen;
|
|
uiop->uio_iov->iov_len -= tlen;
|
|
uiop->uio_resid -= tlen;
|
|
} else {
|
|
if (nfsm_adv(&info, nfsm_rndup(len)) != 0)
|
|
goto nfsmout;
|
|
}
|
|
if (info.nmi_v3) {
|
|
tl = (uint32_t *)nfsm_dissect(&info,
|
|
3 * NFSX_UNSIGNED);
|
|
} else {
|
|
tl = (uint32_t *)nfsm_dissect(&info,
|
|
2 * NFSX_UNSIGNED);
|
|
}
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
if (bigenough) {
|
|
if (info.nmi_v3) {
|
|
ndp->cookie[0] = cookie.nfsuquad[0] =
|
|
*tl++;
|
|
} else
|
|
ndp->cookie[0] = 0;
|
|
|
|
ndp->cookie[1] = cookie.nfsuquad[1] = *tl++;
|
|
} else if (info.nmi_v3)
|
|
tl += 2;
|
|
else
|
|
tl++;
|
|
more_dirs = fxdr_unsigned(int, *tl);
|
|
}
|
|
/*
|
|
* If at end of rpc data, get the eof boolean
|
|
*/
|
|
if (!more_dirs) {
|
|
tl = (uint32_t *)nfsm_dissect(&info, NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
more_dirs = (fxdr_unsigned(int, *tl) == 0);
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
}
|
|
/*
|
|
* Fill last record, iff any, out to a multiple of NFS_READDIRBLKSIZ
|
|
* by increasing d_reclen for the last record.
|
|
*/
|
|
if (blksiz > 0) {
|
|
left = NFS_READDIRBLKSIZ - 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_resid -= left;
|
|
}
|
|
|
|
/*
|
|
* We are now either at the end of the directory or have filled the
|
|
* block.
|
|
*/
|
|
if (bigenough) {
|
|
dnp->n_direofoffset = fxdr_hyper(&cookie.nfsuquad[0]);
|
|
if (end_of_directory) *end_of_directory = 1;
|
|
} else {
|
|
if (uiop->uio_resid > 0)
|
|
printf("EEK! readdirrpc resid > 0\n");
|
|
}
|
|
|
|
nfsmout:
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* NFS V3 readdir plus RPC. Used in place of nfs_readdirrpc().
|
|
*/
|
|
int
|
|
nfs_readdirplusrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred,
|
|
int *end_of_directory, struct proc *p)
|
|
{
|
|
int len, left;
|
|
struct nfs_dirent *ndirp = NULL;
|
|
struct dirent *dp = NULL;
|
|
struct nfsm_info info;
|
|
u_int32_t *tl;
|
|
caddr_t cp;
|
|
struct vnode *newvp;
|
|
caddr_t dpossav1, dpossav2;
|
|
struct mbuf *mdsav1, *mdsav2;
|
|
struct nameidata nami, *ndp = &nami;
|
|
struct componentname *cnp = &ndp->ni_cnd;
|
|
nfsuint64 cookie;
|
|
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
|
|
struct nfsnode *dnp = VTONFS(vp), *np;
|
|
nfsfh_t *fhp;
|
|
u_quad_t fileno;
|
|
int error = 0, tlen, more_dirs = 1, blksiz = 0, doit, bigenough = 1, i;
|
|
int attrflag, fhsize;
|
|
|
|
#ifdef DIAGNOSTIC
|
|
if (uiop->uio_iovcnt != 1 ||
|
|
(uiop->uio_resid & (NFS_DIRBLKSIZ - 1)))
|
|
panic("nfs readdirplusrpc bad uio");
|
|
#endif
|
|
NDINIT(ndp, 0, 0, UIO_SYSSPACE, NULL, p);
|
|
ndp->ni_dvp = vp;
|
|
newvp = NULLVP;
|
|
|
|
txdr_hyper(uiop->uio_offset, &cookie.nfsuquad[0]);
|
|
|
|
/*
|
|
* Loop around doing readdir rpc's of size nm_readdirsize
|
|
* truncated to a multiple of NFS_READDIRBLKSIZ.
|
|
* The stopping criteria is EOF or buffer full.
|
|
*/
|
|
while (more_dirs && bigenough) {
|
|
nfsstats.rpccnt[NFSPROC_READDIRPLUS]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(1) + 6 * NFSX_UNSIGNED);
|
|
nfsm_fhtom(&info, vp, 1);
|
|
tl = nfsm_build(&info.nmi_mb, 6 * NFSX_UNSIGNED);
|
|
*tl++ = cookie.nfsuquad[0];
|
|
*tl++ = cookie.nfsuquad[1];
|
|
if (cookie.nfsuquad[0] == 0 &&
|
|
cookie.nfsuquad[1] == 0) {
|
|
*tl++ = 0;
|
|
*tl++ = 0;
|
|
} else {
|
|
*tl++ = dnp->n_cookieverf.nfsuquad[0];
|
|
*tl++ = dnp->n_cookieverf.nfsuquad[1];
|
|
}
|
|
*tl++ = txdr_unsigned(nmp->nm_readdirsize);
|
|
*tl = txdr_unsigned(nmp->nm_rsize);
|
|
|
|
info.nmi_procp = uiop->uio_procp;
|
|
info.nmi_cred = cred;
|
|
info.nmi_errorp = &error;
|
|
error = nfs_request(vp, NFSPROC_READDIRPLUS, &info);
|
|
if (nfsm_postop_attr(&info, &vp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
if (error) {
|
|
m_freem(info.nmi_mrep);
|
|
goto nfsmout;
|
|
}
|
|
|
|
tl = (uint32_t *)nfsm_dissect(&info, 3 * NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
dnp->n_cookieverf.nfsuquad[0] = *tl++;
|
|
dnp->n_cookieverf.nfsuquad[1] = *tl++;
|
|
more_dirs = fxdr_unsigned(int, *tl);
|
|
|
|
/* loop thru the dir entries, doctoring them to 4bsd form */
|
|
while (more_dirs && bigenough) {
|
|
tl = (uint32_t *)nfsm_dissect(&info, 3 * NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
fileno = fxdr_hyper(tl);
|
|
len = fxdr_unsigned(int, *(tl + 2));
|
|
if (len <= 0 || len > NFS_MAXNAMLEN) {
|
|
error = EBADRPC;
|
|
m_freem(info.nmi_mrep);
|
|
goto nfsmout;
|
|
}
|
|
tlen = DIRENT_RECSIZE(len) + NFS_DIRENT_OVERHEAD;
|
|
left = NFS_READDIRBLKSIZ - blksiz;
|
|
if (tlen > 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_resid -= left;
|
|
blksiz = 0;
|
|
}
|
|
if (tlen > uiop->uio_resid)
|
|
bigenough = 0;
|
|
if (bigenough) {
|
|
ndirp = (struct nfs_dirent *)
|
|
uiop->uio_iov->iov_base;
|
|
dp = &ndirp->dirent;
|
|
dp->d_fileno = fileno;
|
|
dp->d_namlen = len;
|
|
dp->d_reclen = tlen;
|
|
dp->d_type = DT_UNKNOWN;
|
|
blksiz += tlen;
|
|
if (blksiz == NFS_READDIRBLKSIZ)
|
|
blksiz = 0;
|
|
uiop->uio_resid -= NFS_DIRHDSIZ;
|
|
uiop->uio_iov->iov_base =
|
|
(char *)uiop->uio_iov->iov_base +
|
|
NFS_DIRHDSIZ;
|
|
uiop->uio_iov->iov_len -= NFS_DIRHDSIZ;
|
|
cnp->cn_nameptr = uiop->uio_iov->iov_base;
|
|
cnp->cn_namelen = len;
|
|
if (nfsm_mtouio(&info, uiop, len) != 0)
|
|
goto nfsmout;
|
|
cp = uiop->uio_iov->iov_base;
|
|
tlen -= NFS_DIRHDSIZ + len;
|
|
*cp = '\0';
|
|
uiop->uio_iov->iov_base += tlen;
|
|
uiop->uio_iov->iov_len -= tlen;
|
|
uiop->uio_resid -= tlen;
|
|
} else {
|
|
if (nfsm_adv(&info, nfsm_rndup(len)) != 0)
|
|
goto nfsmout;
|
|
}
|
|
tl = (uint32_t *)nfsm_dissect(&info, 3 * NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
if (bigenough) {
|
|
ndirp->cookie[0] = cookie.nfsuquad[0] = *tl++;
|
|
ndirp->cookie[1] = cookie.nfsuquad[1] = *tl++;
|
|
} else
|
|
tl += 2;
|
|
|
|
/*
|
|
* Since the attributes are before the file handle
|
|
* (sigh), we must skip over the attributes and then
|
|
* come back and get them.
|
|
*/
|
|
attrflag = fxdr_unsigned(int, *tl);
|
|
if (attrflag) {
|
|
dpossav1 = info.nmi_dpos;
|
|
mdsav1 = info.nmi_md;
|
|
if (nfsm_adv(&info, NFSX_V3FATTR) != 0)
|
|
goto nfsmout;
|
|
tl = (uint32_t *)
|
|
nfsm_dissect(&info, NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
doit = fxdr_unsigned(int, *tl);
|
|
if (doit) {
|
|
if ((fhp =
|
|
nfsm_getfh(&info, &fhsize, 1)) ==
|
|
NULL)
|
|
goto nfsmout;
|
|
if (NFS_CMPFH(dnp, fhp, fhsize)) {
|
|
vref(vp);
|
|
newvp = vp;
|
|
np = dnp;
|
|
} else {
|
|
error = nfs_nget(vp->v_mount,
|
|
fhp, fhsize, &np);
|
|
if (error)
|
|
doit = 0;
|
|
else
|
|
newvp = NFSTOV(np);
|
|
}
|
|
}
|
|
if (doit && bigenough) {
|
|
dpossav2 = info.nmi_dpos;
|
|
info.nmi_dpos = dpossav1;
|
|
mdsav2 = info.nmi_md;
|
|
info.nmi_md = mdsav1;
|
|
if (nfsm_loadattr(&info, &newvp,
|
|
NULL) != 0)
|
|
goto nfsmout;
|
|
info.nmi_dpos = dpossav2;
|
|
info.nmi_md = mdsav2;
|
|
dp->d_type = IFTODT(
|
|
VTTOIF(np->n_vattr.va_type));
|
|
if (cnp->cn_namelen <=
|
|
NAMECACHE_MAXLEN) {
|
|
ndp->ni_vp = newvp;
|
|
cache_purge(ndp->ni_dvp);
|
|
nfs_cache_enter(ndp->ni_dvp,
|
|
ndp->ni_vp, cnp);
|
|
}
|
|
}
|
|
} else {
|
|
/* Just skip over the file handle */
|
|
tl = (uint32_t *)
|
|
nfsm_dissect(&info, NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
i = fxdr_unsigned(int, *tl);
|
|
if (i > 0) {
|
|
if (nfsm_adv(&info, nfsm_rndup(i)) != 0)
|
|
goto nfsmout;
|
|
}
|
|
}
|
|
if (newvp != NULLVP) {
|
|
if (newvp == vp)
|
|
vrele(newvp);
|
|
else
|
|
vput(newvp);
|
|
newvp = NULLVP;
|
|
}
|
|
tl = (uint32_t *)nfsm_dissect(&info, NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
more_dirs = fxdr_unsigned(int, *tl);
|
|
}
|
|
/*
|
|
* If at end of rpc data, get the eof boolean
|
|
*/
|
|
if (!more_dirs) {
|
|
tl = (uint32_t *)nfsm_dissect(&info, NFSX_UNSIGNED);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
more_dirs = (fxdr_unsigned(int, *tl) == 0);
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
}
|
|
/*
|
|
* Fill last record, iff any, out to a multiple of NFS_READDIRBLKSIZ
|
|
* by increasing d_reclen for the last record.
|
|
*/
|
|
if (blksiz > 0) {
|
|
left = NFS_READDIRBLKSIZ - 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_resid -= left;
|
|
}
|
|
|
|
/*
|
|
* We are now either at the end of the directory or have filled the
|
|
* block.
|
|
*/
|
|
if (bigenough) {
|
|
dnp->n_direofoffset = fxdr_hyper(&cookie.nfsuquad[0]);
|
|
if (end_of_directory) *end_of_directory = 1;
|
|
} else {
|
|
if (uiop->uio_resid > 0)
|
|
printf("EEK! readdirplusrpc resid > 0\n");
|
|
}
|
|
|
|
nfsmout:
|
|
if (newvp != NULLVP) {
|
|
if (newvp == vp)
|
|
vrele(newvp);
|
|
else
|
|
vput(newvp);
|
|
}
|
|
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...
|
|
*/
|
|
int
|
|
nfs_sillyrename(struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
|
|
{
|
|
struct sillyrename *sp;
|
|
struct nfsnode *np;
|
|
int error;
|
|
|
|
cache_purge(dvp);
|
|
np = VTONFS(vp);
|
|
sp = malloc(sizeof(*sp), M_NFSREQ, M_WAITOK);
|
|
sp->s_cred = crdup(cnp->cn_cred);
|
|
sp->s_dvp = dvp;
|
|
vref(dvp);
|
|
|
|
if (vp->v_type == VDIR) {
|
|
#ifdef DIAGNOSTIC
|
|
printf("nfs: sillyrename dir\n");
|
|
#endif
|
|
error = EINVAL;
|
|
goto bad;
|
|
}
|
|
|
|
/* Try lookitups until we get one that isn't there */
|
|
while (1) {
|
|
/* Fudge together a funny name */
|
|
u_int32_t rnd[2];
|
|
|
|
arc4random_buf(&rnd, sizeof rnd);
|
|
sp->s_namlen = snprintf(sp->s_name, sizeof sp->s_name,
|
|
".nfs%08X%08X", rnd[0], rnd[1]);
|
|
if (sp->s_namlen > sizeof sp->s_name)
|
|
sp->s_namlen = strlen(sp->s_name);
|
|
|
|
if (nfs_lookitup(dvp, sp->s_name, sp->s_namlen, sp->s_cred,
|
|
cnp->cn_proc, NULL))
|
|
break;
|
|
}
|
|
|
|
error = nfs_renameit(dvp, cnp, sp);
|
|
if (error)
|
|
goto bad;
|
|
error = nfs_lookitup(dvp, sp->s_name, sp->s_namlen, sp->s_cred,
|
|
cnp->cn_proc, &np);
|
|
np->n_sillyrename = sp;
|
|
return (0);
|
|
bad:
|
|
vrele(sp->s_dvp);
|
|
crfree(sp->s_cred);
|
|
free(sp, M_NFSREQ, sizeof(*sp));
|
|
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
|
|
*/
|
|
int
|
|
nfs_lookitup(struct vnode *dvp, char *name, int len, struct ucred *cred,
|
|
struct proc *procp, struct nfsnode **npp)
|
|
{
|
|
struct nfsm_info info;
|
|
struct vnode *newvp = NULL;
|
|
struct nfsnode *np, *dnp = VTONFS(dvp);
|
|
int error = 0, fhlen, attrflag = 0;
|
|
nfsfh_t *nfhp;
|
|
|
|
info.nmi_v3 = NFS_ISV3(dvp);
|
|
info.nmi_errorp = &error;
|
|
|
|
nfsstats.rpccnt[NFSPROC_LOOKUP]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(info.nmi_v3) + NFSX_UNSIGNED +
|
|
nfsm_rndup(len));
|
|
nfsm_fhtom(&info, dvp, info.nmi_v3);
|
|
if (nfsm_strtom(&info, name, len, NFS_MAXNAMLEN) != 0)
|
|
goto nfsmout;
|
|
|
|
info.nmi_procp = procp;
|
|
info.nmi_cred = cred;
|
|
error = nfs_request(dvp, NFSPROC_LOOKUP, &info);
|
|
if (error && !info.nmi_v3) {
|
|
m_freem(info.nmi_mrep);
|
|
goto nfsmout;
|
|
}
|
|
|
|
if (npp && !error) {
|
|
if ((nfhp = nfsm_getfh(&info, &fhlen, info.nmi_v3)) == NULL)
|
|
goto nfsmout;
|
|
if (*npp) {
|
|
np = *npp;
|
|
np->n_fhp = &np->n_fh;
|
|
bcopy(nfhp, np->n_fhp, fhlen);
|
|
np->n_fhsize = fhlen;
|
|
newvp = NFSTOV(np);
|
|
} else if (NFS_CMPFH(dnp, nfhp, fhlen)) {
|
|
vref(dvp);
|
|
newvp = dvp;
|
|
np = dnp;
|
|
} else {
|
|
error = nfs_nget(dvp->v_mount, nfhp, fhlen, &np);
|
|
if (error) {
|
|
m_freem(info.nmi_mrep);
|
|
return (error);
|
|
}
|
|
newvp = NFSTOV(np);
|
|
}
|
|
if (info.nmi_v3) {
|
|
if (nfsm_postop_attr(&info, &newvp, &attrflag) != 0)
|
|
goto nfsmout;
|
|
if (!attrflag && *npp == NULL) {
|
|
m_freem(info.nmi_mrep);
|
|
if (newvp == dvp)
|
|
vrele(newvp);
|
|
else
|
|
vput(newvp);
|
|
return (ENOENT);
|
|
}
|
|
} else {
|
|
if (nfsm_loadattr(&info, &newvp, NULL) != 0)
|
|
goto nfsmout;
|
|
}
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
nfsmout:
|
|
if (npp && *npp == NULL) {
|
|
if (error) {
|
|
if (newvp == dvp)
|
|
vrele(newvp);
|
|
else
|
|
vput(newvp);
|
|
} else
|
|
*npp = np;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Nfs Version 3 commit rpc
|
|
*/
|
|
int
|
|
nfs_commit(struct vnode *vp, u_quad_t offset, int cnt, struct proc *procp)
|
|
{
|
|
struct nfsm_info info;
|
|
u_int32_t *tl;
|
|
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
|
|
int error = 0, wccflag = NFSV3_WCCRATTR;
|
|
|
|
if ((nmp->nm_flag & NFSMNT_HASWRITEVERF) == 0)
|
|
return (0);
|
|
nfsstats.rpccnt[NFSPROC_COMMIT]++;
|
|
info.nmi_mb = info.nmi_mreq = nfsm_reqhead(NFSX_FH(1));
|
|
nfsm_fhtom(&info, vp, 1);
|
|
info.nmi_errorp = &error;
|
|
|
|
tl = nfsm_build(&info.nmi_mb, 3 * NFSX_UNSIGNED);
|
|
txdr_hyper(offset, tl);
|
|
tl += 2;
|
|
*tl = txdr_unsigned(cnt);
|
|
|
|
info.nmi_procp = procp;
|
|
info.nmi_cred = VTONFS(vp)->n_wcred;
|
|
error = nfs_request(vp, NFSPROC_COMMIT, &info);
|
|
if (nfsm_wcc_data(&info, &vp, &wccflag) != 0)
|
|
goto nfsmout;
|
|
|
|
if (!error) {
|
|
tl = (uint32_t *)nfsm_dissect(&info, NFSX_V3WRITEVERF);
|
|
if (tl == NULL)
|
|
goto nfsmout;
|
|
if (bcmp(nmp->nm_verf, tl,
|
|
NFSX_V3WRITEVERF)) {
|
|
bcopy(tl, nmp->nm_verf,
|
|
NFSX_V3WRITEVERF);
|
|
error = NFSERR_STALEWRITEVERF;
|
|
}
|
|
}
|
|
m_freem(info.nmi_mrep);
|
|
|
|
nfsmout:
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Kludge City..
|
|
* - make nfs_bmap() essentially a no-op that does no translation
|
|
* - do nfs_strategy() by doing I/O with nfs_readrpc/nfs_writerpc
|
|
* (Maybe I could use the process's page mapping, but I was concerned that
|
|
* Kernel Write might not be enabled and also figured copyout() would do
|
|
* a lot more work than bcopy() and also it currently happens in the
|
|
* context of the swapper process (2).
|
|
*/
|
|
int
|
|
nfs_bmap(void *v)
|
|
{
|
|
struct vop_bmap_args *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
if (ap->a_vpp != NULL)
|
|
*ap->a_vpp = vp;
|
|
if (ap->a_bnp != NULL)
|
|
*ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
int
|
|
nfs_strategy(void *v)
|
|
{
|
|
struct vop_strategy_args *ap = v;
|
|
struct buf *bp = ap->a_bp;
|
|
struct proc *p;
|
|
int error = 0;
|
|
|
|
if ((bp->b_flags & (B_PHYS|B_ASYNC)) == (B_PHYS|B_ASYNC))
|
|
panic("nfs physio/async");
|
|
if (bp->b_flags & B_ASYNC)
|
|
p = NULL;
|
|
else
|
|
p = curproc; /* XXX */
|
|
/*
|
|
* 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, 0))
|
|
error = nfs_doio(bp, p);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* fsync vnode op. Just call nfs_flush() with commit == 1.
|
|
*/
|
|
int
|
|
nfs_fsync(void *v)
|
|
{
|
|
struct vop_fsync_args *ap = v;
|
|
|
|
return (nfs_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_p, 1));
|
|
}
|
|
|
|
/*
|
|
* Flush all the blocks associated with a vnode.
|
|
* Walk through the buffer pool and push any dirty pages
|
|
* associated with the vnode.
|
|
*/
|
|
int
|
|
nfs_flush(struct vnode *vp, struct ucred *cred, int waitfor, struct proc *p,
|
|
int commit)
|
|
{
|
|
struct nfsnode *np = VTONFS(vp);
|
|
struct buf *bp;
|
|
int i;
|
|
struct buf *nbp;
|
|
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
|
|
uint64_t slptimeo = INFSLP;
|
|
int s, error = 0, slpflag = 0, retv, bvecpos;
|
|
int dirty, passone = 1;
|
|
u_quad_t off = (u_quad_t)-1, endoff = 0, toff;
|
|
#ifndef NFS_COMMITBVECSIZ
|
|
#define NFS_COMMITBVECSIZ 20
|
|
#endif
|
|
struct buf *bvec[NFS_COMMITBVECSIZ];
|
|
|
|
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:
|
|
bvecpos = 0;
|
|
if (NFS_ISV3(vp) && commit) {
|
|
s = splbio();
|
|
LIST_FOREACH_SAFE(bp, &vp->v_dirtyblkhd, b_vnbufs, nbp) {
|
|
if (bvecpos >= NFS_COMMITBVECSIZ)
|
|
break;
|
|
if ((bp->b_flags & (B_BUSY | B_DELWRI | B_NEEDCOMMIT))
|
|
!= (B_DELWRI | B_NEEDCOMMIT))
|
|
continue;
|
|
bremfree(bp);
|
|
bp->b_flags |= B_WRITEINPROG;
|
|
buf_acquire(bp);
|
|
|
|
/*
|
|
* 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);
|
|
}
|
|
if (bvecpos > 0) {
|
|
/*
|
|
* Commit data on the server, as required.
|
|
*/
|
|
bcstats.pendingwrites++;
|
|
bcstats.numwrites++;
|
|
retv = nfs_commit(vp, off, (int)(endoff - off), p);
|
|
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);
|
|
if (retv) {
|
|
if (i == 0)
|
|
bcstats.pendingwrites--;
|
|
brelse(bp);
|
|
} else {
|
|
if (i > 0)
|
|
bcstats.pendingwrites++;
|
|
s = splbio();
|
|
buf_undirty(bp);
|
|
vp->v_numoutput++;
|
|
bp->b_flags |= B_ASYNC;
|
|
bp->b_flags &= ~(B_READ|B_DONE|B_ERROR);
|
|
bp->b_dirtyoff = bp->b_dirtyend = 0;
|
|
biodone(bp);
|
|
splx(s);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Start/do any write(s) that are required.
|
|
*/
|
|
loop:
|
|
s = splbio();
|
|
LIST_FOREACH_SAFE(bp, &vp->v_dirtyblkhd, b_vnbufs, nbp) {
|
|
if (bp->b_flags & B_BUSY) {
|
|
if (waitfor != MNT_WAIT || passone)
|
|
continue;
|
|
bp->b_flags |= B_WANTED;
|
|
error = tsleep_nsec(bp, slpflag | (PRIBIO + 1),
|
|
"nfsfsync", slptimeo);
|
|
splx(s);
|
|
if (error) {
|
|
if (nfs_sigintr(nmp, NULL, p))
|
|
return (EINTR);
|
|
if (slpflag == PCATCH) {
|
|
slpflag = 0;
|
|
slptimeo = SEC_TO_NSEC(2);
|
|
}
|
|
}
|
|
goto loop;
|
|
}
|
|
if ((bp->b_flags & B_DELWRI) == 0)
|
|
panic("nfs_fsync: not dirty");
|
|
if ((passone || !commit) && (bp->b_flags & B_NEEDCOMMIT))
|
|
continue;
|
|
bremfree(bp);
|
|
if (passone || !commit) {
|
|
bp->b_flags |= B_ASYNC;
|
|
} else {
|
|
bp->b_flags |= (B_ASYNC|B_WRITEINPROG|B_NEEDCOMMIT);
|
|
}
|
|
buf_acquire(bp);
|
|
splx(s);
|
|
VOP_BWRITE(bp);
|
|
goto loop;
|
|
}
|
|
splx(s);
|
|
if (passone) {
|
|
passone = 0;
|
|
goto again;
|
|
}
|
|
if (waitfor == MNT_WAIT) {
|
|
loop2:
|
|
s = splbio();
|
|
error = vwaitforio(vp, slpflag, "nfs_fsync", slptimeo);
|
|
if (error) {
|
|
splx(s);
|
|
if (nfs_sigintr(nmp, NULL, p))
|
|
return (EINTR);
|
|
if (slpflag == PCATCH) {
|
|
slpflag = 0;
|
|
slptimeo = SEC_TO_NSEC(2);
|
|
}
|
|
goto loop2;
|
|
}
|
|
dirty = (!LIST_EMPTY(&vp->v_dirtyblkhd) && commit);
|
|
splx(s);
|
|
if (dirty) {
|
|
#if 0
|
|
vprint("nfs_fsync: dirty", vp);
|
|
#endif
|
|
goto loop;
|
|
}
|
|
}
|
|
if (np->n_flag & NWRITEERR) {
|
|
error = np->n_error;
|
|
np->n_flag &= ~NWRITEERR;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Return POSIX pathconf information applicable to nfs.
|
|
* Fake it. For v3 we could ask the server, but such code
|
|
* hasn't been written yet.
|
|
*/
|
|
int
|
|
nfs_pathconf(void *v)
|
|
{
|
|
struct vop_pathconf_args *ap = v;
|
|
struct nfsmount *nmp = VFSTONFS(ap->a_vp->v_mount);
|
|
int error = 0;
|
|
|
|
switch (ap->a_name) {
|
|
case _PC_LINK_MAX:
|
|
*ap->a_retval = LINK_MAX;
|
|
break;
|
|
case _PC_NAME_MAX:
|
|
*ap->a_retval = NAME_MAX;
|
|
break;
|
|
case _PC_CHOWN_RESTRICTED:
|
|
*ap->a_retval = 1;
|
|
break;
|
|
case _PC_NO_TRUNC:
|
|
*ap->a_retval = 1;
|
|
break;
|
|
case _PC_ALLOC_SIZE_MIN:
|
|
*ap->a_retval = NFS_FABLKSIZE;
|
|
break;
|
|
case _PC_FILESIZEBITS:
|
|
*ap->a_retval = 64;
|
|
break;
|
|
case _PC_REC_INCR_XFER_SIZE:
|
|
*ap->a_retval = min(nmp->nm_rsize, nmp->nm_wsize);
|
|
break;
|
|
case _PC_REC_MAX_XFER_SIZE:
|
|
*ap->a_retval = -1; /* means ``unlimited'' */
|
|
break;
|
|
case _PC_REC_MIN_XFER_SIZE:
|
|
*ap->a_retval = min(nmp->nm_rsize, nmp->nm_wsize);
|
|
break;
|
|
case _PC_REC_XFER_ALIGN:
|
|
*ap->a_retval = PAGE_SIZE;
|
|
break;
|
|
case _PC_SYMLINK_MAX:
|
|
*ap->a_retval = MAXPATHLEN;
|
|
break;
|
|
case _PC_2_SYMLINKS:
|
|
*ap->a_retval = 1;
|
|
break;
|
|
case _PC_TIMESTAMP_RESOLUTION:
|
|
*ap->a_retval = NFS_ISV3(ap->a_vp) ? 1 : 1000;
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* NFS advisory byte-level locks.
|
|
*/
|
|
int
|
|
nfs_advlock(void *v)
|
|
{
|
|
struct vop_advlock_args *ap = v;
|
|
struct nfsnode *np = VTONFS(ap->a_vp);
|
|
|
|
return (lf_advlock(&np->n_lockf, np->n_size, ap->a_id, ap->a_op,
|
|
ap->a_fl, ap->a_flags));
|
|
}
|
|
|
|
/*
|
|
* Print out the contents of an nfsnode.
|
|
*/
|
|
int
|
|
nfs_print(void *v)
|
|
{
|
|
struct vop_print_args *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct nfsnode *np = VTONFS(vp);
|
|
|
|
printf("tag VT_NFS, fileid %lld fsid 0x%lx",
|
|
np->n_vattr.va_fileid, np->n_vattr.va_fsid);
|
|
#ifdef FIFO
|
|
if (vp->v_type == VFIFO)
|
|
fifo_printinfo(vp);
|
|
#endif
|
|
printf("\n");
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Just call nfs_writebp() with the force argument set to 1.
|
|
*/
|
|
int
|
|
nfs_bwrite(void *v)
|
|
{
|
|
struct vop_bwrite_args *ap = v;
|
|
|
|
return (nfs_writebp(ap->a_bp, 1));
|
|
}
|
|
|
|
/*
|
|
* This is a clone of vop_generic_bwrite(), except that B_WRITEINPROG isn't set unless
|
|
* the force flag is one and it also handles the B_NEEDCOMMIT flag.
|
|
*/
|
|
int
|
|
nfs_writebp(struct buf *bp, int force)
|
|
{
|
|
int oldflags = bp->b_flags, retv = 1;
|
|
struct proc *p = curproc; /* XXX */
|
|
off_t off;
|
|
size_t cnt;
|
|
int s;
|
|
struct vnode *vp;
|
|
struct nfsnode *np;
|
|
|
|
if(!(bp->b_flags & B_BUSY))
|
|
panic("bwrite: buffer is not busy???");
|
|
|
|
vp = bp->b_vp;
|
|
np = VTONFS(vp);
|
|
|
|
bp->b_flags &= ~(B_READ|B_DONE|B_ERROR);
|
|
|
|
s = splbio();
|
|
buf_undirty(bp);
|
|
|
|
if ((oldflags & B_ASYNC) && !(oldflags & B_DELWRI) && p)
|
|
++p->p_ru.ru_oublock;
|
|
|
|
bp->b_vp->v_numoutput++;
|
|
splx(s);
|
|
|
|
/*
|
|
* If B_NEEDCOMMIT is set, a commit rpc may do the trick. If not
|
|
* an actual write will have to be scheduled via. VOP_STRATEGY().
|
|
* If B_WRITEINPROG is already set, then push it with a write anyhow.
|
|
*/
|
|
if ((oldflags & (B_NEEDCOMMIT | B_WRITEINPROG)) == B_NEEDCOMMIT) {
|
|
off = ((u_quad_t)bp->b_blkno) * DEV_BSIZE + bp->b_dirtyoff;
|
|
cnt = bp->b_dirtyend - bp->b_dirtyoff;
|
|
|
|
rw_enter_write(&np->n_commitlock);
|
|
if (!(bp->b_flags & B_NEEDCOMMIT)) {
|
|
rw_exit_write(&np->n_commitlock);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* If it's already been committed by somebody else,
|
|
* bail.
|
|
*/
|
|
if (!nfs_in_committed_range(vp, bp)) {
|
|
int pushedrange = 0;
|
|
/*
|
|
* Since we're going to do this, push as much
|
|
* as we can.
|
|
*/
|
|
|
|
if (nfs_in_tobecommitted_range(vp, bp)) {
|
|
pushedrange = 1;
|
|
off = np->n_pushlo;
|
|
cnt = np->n_pushhi - np->n_pushlo;
|
|
}
|
|
|
|
bp->b_flags |= B_WRITEINPROG;
|
|
bcstats.pendingwrites++;
|
|
bcstats.numwrites++;
|
|
retv = nfs_commit(bp->b_vp, off, cnt, curproc);
|
|
bp->b_flags &= ~B_WRITEINPROG;
|
|
|
|
if (retv == 0) {
|
|
if (pushedrange)
|
|
nfs_merge_commit_ranges(vp);
|
|
else
|
|
nfs_add_committed_range(vp, bp);
|
|
} else
|
|
bcstats.pendingwrites--;
|
|
} else
|
|
retv = 0; /* It has already been committed. */
|
|
|
|
rw_exit_write(&np->n_commitlock);
|
|
if (!retv) {
|
|
bp->b_dirtyoff = bp->b_dirtyend = 0;
|
|
bp->b_flags &= ~B_NEEDCOMMIT;
|
|
s = splbio();
|
|
biodone(bp);
|
|
splx(s);
|
|
} else if (retv == NFSERR_STALEWRITEVERF)
|
|
nfs_clearcommit(bp->b_vp->v_mount);
|
|
}
|
|
if (retv) {
|
|
s = splbio();
|
|
buf_flip_dma(bp);
|
|
if (force)
|
|
bp->b_flags |= B_WRITEINPROG;
|
|
splx(s);
|
|
VOP_STRATEGY(bp->b_vp, bp);
|
|
}
|
|
|
|
if( (oldflags & B_ASYNC) == 0) {
|
|
int rtval;
|
|
|
|
bp->b_flags |= B_RAW;
|
|
rtval = biowait(bp);
|
|
if (!(oldflags & B_DELWRI) && p) {
|
|
++p->p_ru.ru_oublock;
|
|
}
|
|
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.
|
|
*/
|
|
int
|
|
nfsspec_access(void *v)
|
|
{
|
|
struct vop_access_args *ap = v;
|
|
struct vattr va;
|
|
struct vnode *vp = ap->a_vp;
|
|
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 ((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;
|
|
}
|
|
}
|
|
|
|
error = VOP_GETATTR(vp, &va, ap->a_cred, ap->a_p);
|
|
if (error)
|
|
return (error);
|
|
|
|
return (vaccess(vp->v_type, va.va_mode, va.va_uid, va.va_gid,
|
|
ap->a_mode, ap->a_cred));
|
|
}
|
|
|
|
/*
|
|
* Read wrapper for special devices.
|
|
*/
|
|
int
|
|
nfsspec_read(void *v)
|
|
{
|
|
struct vop_read_args *ap = v;
|
|
struct nfsnode *np = VTONFS(ap->a_vp);
|
|
|
|
/*
|
|
* Set access flag.
|
|
*/
|
|
np->n_flag |= NACC;
|
|
getnanotime(&np->n_atim);
|
|
return (spec_read(ap));
|
|
}
|
|
|
|
/*
|
|
* Write wrapper for special devices.
|
|
*/
|
|
int
|
|
nfsspec_write(void *v)
|
|
{
|
|
struct vop_write_args *ap = v;
|
|
struct nfsnode *np = VTONFS(ap->a_vp);
|
|
|
|
/*
|
|
* Set update flag.
|
|
*/
|
|
np->n_flag |= NUPD;
|
|
getnanotime(&np->n_mtim);
|
|
return (spec_write(ap));
|
|
}
|
|
|
|
/*
|
|
* Close wrapper for special devices.
|
|
*
|
|
* Update the times on the nfsnode then do device close.
|
|
*/
|
|
int
|
|
nfsspec_close(void *v)
|
|
{
|
|
struct vop_close_args *ap = v;
|
|
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 (vp->v_usecount == 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_p);
|
|
}
|
|
}
|
|
return (spec_close(ap));
|
|
}
|
|
|
|
#ifdef FIFO
|
|
/*
|
|
* Read wrapper for fifos.
|
|
*/
|
|
int
|
|
nfsfifo_read(void *v)
|
|
{
|
|
struct vop_read_args *ap = v;
|
|
struct nfsnode *np = VTONFS(ap->a_vp);
|
|
|
|
/*
|
|
* Set access flag.
|
|
*/
|
|
np->n_flag |= NACC;
|
|
getnanotime(&np->n_atim);
|
|
return (fifo_read(ap));
|
|
}
|
|
|
|
/*
|
|
* Write wrapper for fifos.
|
|
*/
|
|
int
|
|
nfsfifo_write(void *v)
|
|
{
|
|
struct vop_write_args *ap = v;
|
|
struct nfsnode *np = VTONFS(ap->a_vp);
|
|
|
|
/*
|
|
* Set update flag.
|
|
*/
|
|
np->n_flag |= NUPD;
|
|
getnanotime(&np->n_mtim);
|
|
return (fifo_write(ap));
|
|
}
|
|
|
|
/*
|
|
* Close wrapper for fifos.
|
|
*
|
|
* Update the times on the nfsnode then do fifo close.
|
|
*/
|
|
int
|
|
nfsfifo_close(void *v)
|
|
{
|
|
struct vop_close_args *ap = v;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct nfsnode *np = VTONFS(vp);
|
|
struct vattr vattr;
|
|
|
|
if (np->n_flag & (NACC | NUPD)) {
|
|
if (np->n_flag & NACC) {
|
|
getnanotime(&np->n_atim);
|
|
}
|
|
if (np->n_flag & NUPD) {
|
|
getnanotime(&np->n_mtim);
|
|
}
|
|
np->n_flag |= NCHG;
|
|
if (vp->v_usecount == 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_p);
|
|
}
|
|
}
|
|
return (fifo_close(ap));
|
|
}
|
|
|
|
int
|
|
nfsfifo_reclaim(void *v)
|
|
{
|
|
fifo_reclaim(v);
|
|
return (nfs_reclaim(v));
|
|
}
|
|
#endif /* ! FIFO */
|