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freebsd-nq/sys/fs/nfsserver/nfs_nfsdsocket.c
Rick Macklem c057a37818 Add support for NFSv4.2 to the NFS client and server. 
This patch adds support for NFSv4.2 (RFC-7862) and Extended Attributes
(RFC-8276) to the NFS client and server.
NFSv4.2 is comprised of several optional features that can be supported
in addition to NFSv4.1. This patch adds the following optional features:
   - posix_fadvise(POSIX_FADV_WILLNEED/POSIX_FADV_DONTNEED)
   - posix_fallocate()
   - intra server file range copying via the copy_file_range(2) syscall
     --> Avoiding data tranfer over the wire to/from the NFS client.
   - lseek(SEEK_DATA/SEEK_HOLE)
   - Extended attribute syscalls for "user" namespace attributes as defined
     by RFC-8276.

Although this patch is fairly large, it should not affect support for
the other versions of NFS. However it does add two new sysctls that allow
a sysadmin to limit which minor versions of NFSv4 a server supports, allowing
a sysadmin to disable NFSv4.2.

Unfortunately, when the NFS stats structure was last revised, it was assumed
that there would be no additional operations added beyond what was
specified in RFC-7862. However RFC-8276 did add additional operations,
forcing the NFS stats structure to revised again. It now has extra unused
entries in all arrays, so that future extensions to NFSv4.2 can be
accomodated without revising this structure again.

A future commit will update nfsstat(1) to report counts for the new NFSv4.2
specific operations/procedures.

This patch affects the internal interface between the nfscommon, nfscl and
nfsd modules and, as such, they all must be upgraded simultaneously.
I will do a version bump (although arguably not needed), due to this.

This code has survived a "make universe" but has not been built with a
recent GCC. If you encounter build problems, please email me.

Relnotes:	yes
2019-12-12 23:22:55 +00:00

1207 lines
47 KiB
C
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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Macklem at The University of Guelph.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Socket operations for use by the nfs server.
*/
#ifndef APPLEKEXT
#include <fs/nfs/nfsport.h>
extern struct nfsstatsv1 nfsstatsv1;
extern struct nfsrvfh nfs_pubfh, nfs_rootfh;
extern int nfs_pubfhset, nfs_rootfhset;
extern struct nfsv4lock nfsv4rootfs_lock;
extern struct nfsrv_stablefirst nfsrv_stablefirst;
extern struct nfsclienthashhead *nfsclienthash;
extern int nfsrv_clienthashsize;
extern int nfsrc_floodlevel, nfsrc_tcpsavedreplies;
extern int nfsd_debuglevel;
extern int nfsrv_layouthighwater;
extern volatile int nfsrv_layoutcnt;
NFSV4ROOTLOCKMUTEX;
NFSSTATESPINLOCK;
int (*nfsrv3_procs0[NFS_V3NPROCS])(struct nfsrv_descript *,
int, vnode_t , struct nfsexstuff *) = {
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
nfsrvd_getattr,
nfsrvd_setattr,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
nfsrvd_access,
nfsrvd_readlink,
nfsrvd_read,
nfsrvd_write,
nfsrvd_create,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
nfsrvd_remove,
nfsrvd_remove,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
nfsrvd_readdir,
nfsrvd_readdirplus,
nfsrvd_statfs,
nfsrvd_fsinfo,
nfsrvd_pathconf,
nfsrvd_commit,
};
int (*nfsrv3_procs1[NFS_V3NPROCS])(struct nfsrv_descript *,
int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *) = {
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
nfsrvd_lookup,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
nfsrvd_mkdir,
nfsrvd_symlink,
nfsrvd_mknod,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
};
int (*nfsrv3_procs2[NFS_V3NPROCS])(struct nfsrv_descript *,
int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *) = {
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
nfsrvd_rename,
nfsrvd_link,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
};
int (*nfsrv4_ops0[NFSV42_NOPS])(struct nfsrv_descript *,
int, vnode_t , struct nfsexstuff *) = {
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
nfsrvd_access,
nfsrvd_close,
nfsrvd_commit,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
nfsrvd_delegpurge,
nfsrvd_delegreturn,
nfsrvd_getattr,
nfsrvd_getfh,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
nfsrvd_lock,
nfsrvd_lockt,
nfsrvd_locku,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
nfsrvd_verify,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
nfsrvd_openconfirm,
nfsrvd_opendowngrade,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
nfsrvd_read,
nfsrvd_readdirplus,
nfsrvd_readlink,
nfsrvd_remove,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
nfsrvd_renew,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
nfsrvd_secinfo,
nfsrvd_setattr,
nfsrvd_setclientid,
nfsrvd_setclientidcfrm,
nfsrvd_verify,
nfsrvd_write,
nfsrvd_releaselckown,
nfsrvd_notsupp,
nfsrvd_bindconnsess,
nfsrvd_exchangeid,
nfsrvd_createsession,
nfsrvd_destroysession,
nfsrvd_freestateid,
nfsrvd_notsupp,
nfsrvd_getdevinfo,
nfsrvd_notsupp,
nfsrvd_layoutcommit,
nfsrvd_layoutget,
nfsrvd_layoutreturn,
nfsrvd_notsupp,
nfsrvd_sequence,
nfsrvd_notsupp,
nfsrvd_teststateid,
nfsrvd_notsupp,
nfsrvd_destroyclientid,
nfsrvd_reclaimcomplete,
nfsrvd_allocate,
(int (*)(struct nfsrv_descript *, int, vnode_t , struct nfsexstuff *))0,
nfsrvd_notsupp,
nfsrvd_notsupp,
nfsrvd_ioadvise,
nfsrvd_layouterror,
nfsrvd_layoutstats,
nfsrvd_notsupp,
nfsrvd_notsupp,
nfsrvd_notsupp,
nfsrvd_seek,
nfsrvd_notsupp,
nfsrvd_notsupp,
nfsrvd_getxattr,
nfsrvd_setxattr,
nfsrvd_listxattr,
nfsrvd_rmxattr,
};
int (*nfsrv4_ops1[NFSV42_NOPS])(struct nfsrv_descript *,
int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *) = {
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
nfsrvd_mknod,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
nfsrvd_lookup,
nfsrvd_lookup,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
nfsrvd_open,
nfsrvd_openattr,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t *, fhandle_t *, struct nfsexstuff *))0,
};
int (*nfsrv4_ops2[NFSV42_NOPS])(struct nfsrv_descript *,
int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *) = {
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
nfsrvd_link,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
nfsrvd_rename,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
nfsrvd_copy_file_range,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
(int (*)(struct nfsrv_descript *, int, vnode_t , vnode_t , struct nfsexstuff *, struct nfsexstuff *))0,
};
#endif /* !APPLEKEXT */
/*
* Static array that defines which nfs rpc's are nonidempotent
*/
static int nfsrv_nonidempotent[NFS_V3NPROCS] = {
FALSE,
FALSE,
TRUE,
FALSE,
FALSE,
FALSE,
FALSE,
TRUE,
TRUE,
TRUE,
TRUE,
TRUE,
TRUE,
TRUE,
TRUE,
TRUE,
FALSE,
FALSE,
FALSE,
FALSE,
FALSE,
FALSE,
};
/*
* This static array indicates whether or not the RPC modifies the
* file system.
*/
int nfsrv_writerpc[NFS_NPROCS] = { 0, 0, 1, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 };
SYSCTL_DECL(_vfs_nfsd);
static int nfs_minminorv4 = NFSV4_MINORVERSION;
SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_min_minorversion4, CTLFLAG_RWTUN,
&nfs_minminorv4, 0,
"The lowest minor version of NFSv4 handled by the server");
static int nfs_maxminorv4 = NFSV42_MINORVERSION;
SYSCTL_INT(_vfs_nfsd, OID_AUTO, server_max_minorversion4, CTLFLAG_RWTUN,
&nfs_maxminorv4, 0,
"The highest minor version of NFSv4 handled by the server");
/* local functions */
static void nfsrvd_compound(struct nfsrv_descript *nd, int isdgram,
u_char *tag, int taglen, u_int32_t minorvers);
/*
* This static array indicates which server procedures require the extra
* arguments to return the current file handle for V2, 3.
*/
static int nfs_retfh[NFS_V3NPROCS] = { 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1,
1, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0 };
extern struct nfsv4_opflag nfsv4_opflag[NFSV42_NOPS];
static int nfsv3to4op[NFS_V3NPROCS] = {
NFSPROC_NULL,
NFSV4OP_GETATTR,
NFSV4OP_SETATTR,
NFSV4OP_LOOKUP,
NFSV4OP_ACCESS,
NFSV4OP_READLINK,
NFSV4OP_READ,
NFSV4OP_WRITE,
NFSV4OP_V3CREATE,
NFSV4OP_MKDIR,
NFSV4OP_SYMLINK,
NFSV4OP_MKNOD,
NFSV4OP_REMOVE,
NFSV4OP_RMDIR,
NFSV4OP_RENAME,
NFSV4OP_LINK,
NFSV4OP_READDIR,
NFSV4OP_READDIRPLUS,
NFSV4OP_FSSTAT,
NFSV4OP_FSINFO,
NFSV4OP_PATHCONF,
NFSV4OP_COMMIT,
};
static struct mtx nfsrvd_statmtx;
MTX_SYSINIT(nfsst, &nfsrvd_statmtx, "NFSstat", MTX_DEF);
static void
nfsrvd_statstart(int op, struct bintime *now)
{
if (op > (NFSV42_NOPS + NFSV4OP_FAKENOPS)) {
printf("%s: op %d invalid\n", __func__, op);
return;
}
mtx_lock(&nfsrvd_statmtx);
if (nfsstatsv1.srvstartcnt == nfsstatsv1.srvdonecnt) {
if (now != NULL)
nfsstatsv1.busyfrom = *now;
else
binuptime(&nfsstatsv1.busyfrom);
}
nfsstatsv1.srvrpccnt[op]++;
nfsstatsv1.srvstartcnt++;
mtx_unlock(&nfsrvd_statmtx);
}
static void
nfsrvd_statend(int op, uint64_t bytes, struct bintime *now,
struct bintime *then)
{
struct bintime dt, lnow;
if (op > (NFSV42_NOPS + NFSV4OP_FAKENOPS)) {
printf("%s: op %d invalid\n", __func__, op);
return;
}
if (now == NULL) {
now = &lnow;
binuptime(now);
}
mtx_lock(&nfsrvd_statmtx);
nfsstatsv1.srvbytes[op] += bytes;
nfsstatsv1.srvops[op]++;
if (then != NULL) {
dt = *now;
bintime_sub(&dt, then);
bintime_add(&nfsstatsv1.srvduration[op], &dt);
}
dt = *now;
bintime_sub(&dt, &nfsstatsv1.busyfrom);
bintime_add(&nfsstatsv1.busytime, &dt);
nfsstatsv1.busyfrom = *now;
nfsstatsv1.srvdonecnt++;
mtx_unlock(&nfsrvd_statmtx);
}
/*
* Do an RPC. Basically, get the file handles translated to vnode pointers
* and then call the appropriate server routine. The server routines are
* split into groups, based on whether they use a file handle or file
* handle plus name or ...
* The NFS V4 Compound RPC is performed separately by nfsrvd_compound().
*/
APPLESTATIC void
nfsrvd_dorpc(struct nfsrv_descript *nd, int isdgram, u_char *tag, int taglen,
u_int32_t minorvers)
{
int error = 0, lktype;
vnode_t vp;
mount_t mp = NULL;
struct nfsrvfh fh;
struct nfsexstuff nes;
/*
* Get a locked vnode for the first file handle
*/
if (!(nd->nd_flag & ND_NFSV4)) {
KASSERT(nd->nd_repstat == 0, ("nfsrvd_dorpc"));
/*
* For NFSv3, if the malloc/mget allocation is near limits,
* return NFSERR_DELAY.
*/
if ((nd->nd_flag & ND_NFSV3) && nfsrv_mallocmget_limit()) {
nd->nd_repstat = NFSERR_DELAY;
vp = NULL;
} else {
error = nfsrv_mtofh(nd, &fh);
if (error) {
if (error != EBADRPC)
printf("nfs dorpc err1=%d\n", error);
nd->nd_repstat = NFSERR_GARBAGE;
goto out;
}
if (nd->nd_procnum == NFSPROC_READ ||
nd->nd_procnum == NFSPROC_WRITE ||
nd->nd_procnum == NFSPROC_READDIR ||
nd->nd_procnum == NFSPROC_READDIRPLUS ||
nd->nd_procnum == NFSPROC_READLINK ||
nd->nd_procnum == NFSPROC_GETATTR ||
nd->nd_procnum == NFSPROC_ACCESS ||
nd->nd_procnum == NFSPROC_FSSTAT ||
nd->nd_procnum == NFSPROC_FSINFO)
lktype = LK_SHARED;
else
lktype = LK_EXCLUSIVE;
if (nd->nd_flag & ND_PUBLOOKUP)
nfsd_fhtovp(nd, &nfs_pubfh, lktype, &vp, &nes,
&mp, nfsrv_writerpc[nd->nd_procnum]);
else
nfsd_fhtovp(nd, &fh, lktype, &vp, &nes,
&mp, nfsrv_writerpc[nd->nd_procnum]);
if (nd->nd_repstat == NFSERR_PROGNOTV4)
goto out;
}
}
/*
* For V2 and 3, set the ND_SAVEREPLY flag for the recent request
* cache, as required.
* For V4, nfsrvd_compound() does this.
*/
if (!(nd->nd_flag & ND_NFSV4) && nfsrv_nonidempotent[nd->nd_procnum])
nd->nd_flag |= ND_SAVEREPLY;
nfsrvd_rephead(nd);
/*
* If nd_repstat is non-zero, just fill in the reply status
* to complete the RPC reply for V2. Otherwise, you must do
* the RPC.
*/
if (nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) {
*nd->nd_errp = nfsd_errmap(nd);
nfsrvd_statstart(nfsv3to4op[nd->nd_procnum], /*now*/ NULL);
nfsrvd_statend(nfsv3to4op[nd->nd_procnum], /*bytes*/ 0,
/*now*/ NULL, /*then*/ NULL);
if (mp != NULL && nfsrv_writerpc[nd->nd_procnum] != 0)
vn_finished_write(mp);
goto out;
}
/*
* Now the procedure can be performed. For V4, nfsrvd_compound()
* works through the sub-rpcs, otherwise just call the procedure.
* The procedures are in three groups with different arguments.
* The group is indicated by the value in nfs_retfh[].
*/
if (nd->nd_flag & ND_NFSV4) {
nfsrvd_compound(nd, isdgram, tag, taglen, minorvers);
} else {
struct bintime start_time;
binuptime(&start_time);
nfsrvd_statstart(nfsv3to4op[nd->nd_procnum], &start_time);
if (nfs_retfh[nd->nd_procnum] == 1) {
if (vp)
NFSVOPUNLOCK(vp, 0);
error = (*(nfsrv3_procs1[nd->nd_procnum]))(nd, isdgram,
vp, NULL, (fhandle_t *)fh.nfsrvfh_data, &nes);
} else if (nfs_retfh[nd->nd_procnum] == 2) {
error = (*(nfsrv3_procs2[nd->nd_procnum]))(nd, isdgram,
vp, NULL, &nes, NULL);
} else {
error = (*(nfsrv3_procs0[nd->nd_procnum]))(nd, isdgram,
vp, &nes);
}
if (mp != NULL && nfsrv_writerpc[nd->nd_procnum] != 0)
vn_finished_write(mp);
nfsrvd_statend(nfsv3to4op[nd->nd_procnum], /*bytes*/ 0,
/*now*/ NULL, /*then*/ &start_time);
}
if (error) {
if (error != EBADRPC)
printf("nfs dorpc err2=%d\n", error);
nd->nd_repstat = NFSERR_GARBAGE;
}
*nd->nd_errp = nfsd_errmap(nd);
/*
* Don't cache certain reply status values.
*/
if (nd->nd_repstat && (nd->nd_flag & ND_SAVEREPLY) &&
(nd->nd_repstat == NFSERR_GARBAGE ||
nd->nd_repstat == NFSERR_BADXDR ||
nd->nd_repstat == NFSERR_MOVED ||
nd->nd_repstat == NFSERR_DELAY ||
nd->nd_repstat == NFSERR_BADSEQID ||
nd->nd_repstat == NFSERR_RESOURCE ||
nd->nd_repstat == NFSERR_SERVERFAULT ||
nd->nd_repstat == NFSERR_STALECLIENTID ||
nd->nd_repstat == NFSERR_STALESTATEID ||
nd->nd_repstat == NFSERR_OLDSTATEID ||
nd->nd_repstat == NFSERR_BADSTATEID ||
nd->nd_repstat == NFSERR_GRACE ||
nd->nd_repstat == NFSERR_NOGRACE))
nd->nd_flag &= ~ND_SAVEREPLY;
out:
NFSEXITCODE2(0, nd);
}
/*
* Breaks down a compound RPC request and calls the server routines for
* the subprocedures.
* Some suboperations are performed directly here to simplify file handle<-->
* vnode pointer handling.
*/
static void
nfsrvd_compound(struct nfsrv_descript *nd, int isdgram, u_char *tag,
int taglen, u_int32_t minorvers)
{
int i, lktype, op, op0 = 0, statsinprog = 0;
u_int32_t *tl;
struct nfsclient *clp, *nclp;
int numops, error = 0, igotlock;
u_int32_t retops = 0, *retopsp = NULL, *repp;
vnode_t vp, nvp, savevp;
struct nfsrvfh fh;
mount_t new_mp, temp_mp = NULL;
struct ucred *credanon;
struct nfsexstuff nes, vpnes, savevpnes;
fsid_t cur_fsid, save_fsid;
static u_int64_t compref = 0;
struct bintime start_time;
struct thread *p;
p = curthread;
NFSVNO_EXINIT(&vpnes);
NFSVNO_EXINIT(&savevpnes);
/*
* Put the seq# of the current compound RPC in nfsrv_descript.
* (This is used by nfsrv_checkgetattr(), to see if the write
* delegation was created by the same compound RPC as the one
* with that Getattr in it.)
* Don't worry about the 64bit number wrapping around. It ain't
* gonna happen before this server gets shut down/rebooted.
*/
nd->nd_compref = compref++;
/*
* Check for and optionally get a lock on the root. This lock means that
* no nfsd will be fiddling with the V4 file system and state stuff. It
* is required when the V4 root is being changed, the stable storage
* restart file is being updated, or callbacks are being done.
* When any of the nfsd are processing an NFSv4 compound RPC, they must
* either hold a reference count (nfs_usecnt) or the lock. When
* nfsrv_unlock() is called to release the lock, it can optionally
* also get a reference count, which saves the need for a call to
* nfsrv_getref() after nfsrv_unlock().
*/
/*
* First, check to see if we need to wait for an update lock.
*/
igotlock = 0;
NFSLOCKV4ROOTMUTEX();
if (nfsrv_stablefirst.nsf_flags & NFSNSF_NEEDLOCK)
igotlock = nfsv4_lock(&nfsv4rootfs_lock, 1, NULL,
NFSV4ROOTLOCKMUTEXPTR, NULL);
else
igotlock = nfsv4_lock(&nfsv4rootfs_lock, 0, NULL,
NFSV4ROOTLOCKMUTEXPTR, NULL);
NFSUNLOCKV4ROOTMUTEX();
if (igotlock) {
/*
* If I got the lock, I can update the stable storage file.
* Done when the grace period is over or a client has long
* since expired.
*/
nfsrv_stablefirst.nsf_flags &= ~NFSNSF_NEEDLOCK;
if ((nfsrv_stablefirst.nsf_flags &
(NFSNSF_GRACEOVER | NFSNSF_UPDATEDONE)) == NFSNSF_GRACEOVER)
nfsrv_updatestable(p);
/*
* If at least one client has long since expired, search
* the client list for them, write a REVOKE record on the
* stable storage file and then remove them from the client
* list.
*/
if (nfsrv_stablefirst.nsf_flags & NFSNSF_EXPIREDCLIENT) {
nfsrv_stablefirst.nsf_flags &= ~NFSNSF_EXPIREDCLIENT;
for (i = 0; i < nfsrv_clienthashsize; i++) {
LIST_FOREACH_SAFE(clp, &nfsclienthash[i], lc_hash,
nclp) {
if (clp->lc_flags & LCL_EXPIREIT) {
if (!LIST_EMPTY(&clp->lc_open) ||
!LIST_EMPTY(&clp->lc_deleg))
nfsrv_writestable(clp->lc_id,
clp->lc_idlen, NFSNST_REVOKE, p);
nfsrv_cleanclient(clp, p);
nfsrv_freedeleglist(&clp->lc_deleg);
nfsrv_freedeleglist(&clp->lc_olddeleg);
LIST_REMOVE(clp, lc_hash);
nfsrv_zapclient(clp, p);
}
}
}
}
NFSLOCKV4ROOTMUTEX();
nfsv4_unlock(&nfsv4rootfs_lock, 1);
NFSUNLOCKV4ROOTMUTEX();
} else {
/*
* If we didn't get the lock, we need to get a refcnt,
* which also checks for and waits for the lock.
*/
NFSLOCKV4ROOTMUTEX();
nfsv4_getref(&nfsv4rootfs_lock, NULL,
NFSV4ROOTLOCKMUTEXPTR, NULL);
NFSUNLOCKV4ROOTMUTEX();
}
/*
* If flagged, search for open owners that haven't had any opens
* for a long time.
*/
if (nfsrv_stablefirst.nsf_flags & NFSNSF_NOOPENS) {
nfsrv_throwawayopens(p);
}
/* Do a CBLAYOUTRECALL callback if over the high water mark. */
if (nfsrv_layoutcnt > nfsrv_layouthighwater)
nfsrv_recalloldlayout(p);
savevp = vp = NULL;
save_fsid.val[0] = save_fsid.val[1] = 0;
cur_fsid.val[0] = cur_fsid.val[1] = 0;
/* If taglen < 0, there was a parsing error in nfsd_getminorvers(). */
if (taglen < 0) {
error = EBADRPC;
goto nfsmout;
}
(void) nfsm_strtom(nd, tag, taglen);
NFSM_BUILD(retopsp, u_int32_t *, NFSX_UNSIGNED);
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
if ((minorvers != NFSV4_MINORVERSION &&
minorvers != NFSV41_MINORVERSION &&
minorvers != NFSV42_MINORVERSION) ||
minorvers < nfs_minminorv4 || minorvers > nfs_maxminorv4)
nd->nd_repstat = NFSERR_MINORVERMISMATCH;
if (nd->nd_repstat)
numops = 0;
else
numops = fxdr_unsigned(int, *tl);
/*
* Loop around doing the sub ops.
* vp - is an unlocked vnode pointer for the CFH
* savevp - is an unlocked vnode pointer for the SAVEDFH
* (at some future date, it might turn out to be more appropriate
* to keep the file handles instead of vnode pointers?)
* savevpnes and vpnes - are the export flags for the above.
*/
for (i = 0; i < numops; i++) {
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
NFSM_BUILD(repp, u_int32_t *, 2 * NFSX_UNSIGNED);
*repp = *tl;
op = fxdr_unsigned(int, *tl);
NFSD_DEBUG(4, "op=%d\n", op);
if (op < NFSV4OP_ACCESS || op >= NFSV42_NOPS ||
(op >= NFSV4OP_NOPS && (nd->nd_flag & ND_NFSV41) == 0) ||
(op >= NFSV41_NOPS && (nd->nd_flag & ND_NFSV42) == 0)) {
nd->nd_repstat = NFSERR_OPILLEGAL;
*repp++ = txdr_unsigned(NFSV4OP_OPILLEGAL);
*repp = nfsd_errmap(nd);
retops++;
break;
} else {
repp++;
}
binuptime(&start_time);
nfsrvd_statstart(op, &start_time);
statsinprog = 1;
if (i == 0)
op0 = op;
if (i == numops - 1)
nd->nd_flag |= ND_LASTOP;
/*
* Check for a referral on the current FH and, if so, return
* NFSERR_MOVED for all ops that allow it, except Getattr.
*/
if (vp != NULL && op != NFSV4OP_GETATTR &&
nfsv4root_getreferral(vp, NULL, 0) != NULL &&
nfsrv_errmoved(op)) {
nd->nd_repstat = NFSERR_MOVED;
*repp = nfsd_errmap(nd);
retops++;
break;
}
/*
* For NFSv4.1, check for a Sequence Operation being first
* or one of the other allowed operations by itself.
*/
if ((nd->nd_flag & ND_NFSV41) != 0) {
if (i != 0 && op == NFSV4OP_SEQUENCE)
nd->nd_repstat = NFSERR_SEQUENCEPOS;
else if (i == 0 && op != NFSV4OP_SEQUENCE &&
op != NFSV4OP_EXCHANGEID &&
op != NFSV4OP_CREATESESSION &&
op != NFSV4OP_BINDCONNTOSESS &&
op != NFSV4OP_DESTROYCLIENTID &&
op != NFSV4OP_DESTROYSESSION)
nd->nd_repstat = NFSERR_OPNOTINSESS;
else if (i != 0 && op0 != NFSV4OP_SEQUENCE)
nd->nd_repstat = NFSERR_NOTONLYOP;
if (nd->nd_repstat != 0) {
*repp = nfsd_errmap(nd);
retops++;
break;
}
}
nd->nd_procnum = op;
/*
* If over flood level, reply NFSERR_RESOURCE, if at the first
* Op. (Since a client recovery from NFSERR_RESOURCE can get
* really nasty for certain Op sequences, I'll play it safe
* and only return the error at the beginning.) The cache
* will still function over flood level, but uses lots of
* mbufs.)
* If nfsrv_mallocmget_limit() returns True, the system is near
* to its limit for memory that malloc()/mget() can allocate.
*/
if (i == 0 && (nd->nd_rp == NULL ||
nd->nd_rp->rc_refcnt == 0) &&
(nfsrv_mallocmget_limit() ||
nfsrc_tcpsavedreplies > nfsrc_floodlevel)) {
if (nfsrc_tcpsavedreplies > nfsrc_floodlevel)
printf("nfsd server cache flooded, try "
"increasing vfs.nfsd.tcphighwater\n");
nd->nd_repstat = NFSERR_RESOURCE;
*repp = nfsd_errmap(nd);
if (op == NFSV4OP_SETATTR) {
/*
* Setattr replies require a bitmap.
* even for errors like these.
*/
NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
*tl = 0;
}
retops++;
break;
}
if (nfsv4_opflag[op].savereply)
nd->nd_flag |= ND_SAVEREPLY;
switch (op) {
case NFSV4OP_PUTFH:
error = nfsrv_mtofh(nd, &fh);
if (error)
goto nfsmout;
if (!nd->nd_repstat)
nfsd_fhtovp(nd, &fh, LK_SHARED, &nvp, &nes,
NULL, 0);
/* For now, allow this for non-export FHs */
if (!nd->nd_repstat) {
if (vp)
vrele(vp);
vp = nvp;
cur_fsid = vp->v_mount->mnt_stat.f_fsid;
NFSVOPUNLOCK(vp, 0);
vpnes = nes;
}
break;
case NFSV4OP_PUTPUBFH:
if (nfs_pubfhset)
nfsd_fhtovp(nd, &nfs_pubfh, LK_SHARED, &nvp,
&nes, NULL, 0);
else
nd->nd_repstat = NFSERR_NOFILEHANDLE;
if (!nd->nd_repstat) {
if (vp)
vrele(vp);
vp = nvp;
cur_fsid = vp->v_mount->mnt_stat.f_fsid;
NFSVOPUNLOCK(vp, 0);
vpnes = nes;
}
break;
case NFSV4OP_PUTROOTFH:
if (nfs_rootfhset) {
nfsd_fhtovp(nd, &nfs_rootfh, LK_SHARED, &nvp,
&nes, NULL, 0);
if (!nd->nd_repstat) {
if (vp)
vrele(vp);
vp = nvp;
cur_fsid = vp->v_mount->mnt_stat.f_fsid;
NFSVOPUNLOCK(vp, 0);
vpnes = nes;
}
} else
nd->nd_repstat = NFSERR_NOFILEHANDLE;
break;
case NFSV4OP_SAVEFH:
if (vp && NFSVNO_EXPORTED(&vpnes)) {
nd->nd_repstat = 0;
/* If vp == savevp, a no-op */
if (vp != savevp) {
if (savevp)
vrele(savevp);
VREF(vp);
savevp = vp;
savevpnes = vpnes;
save_fsid = cur_fsid;
}
if ((nd->nd_flag & ND_CURSTATEID) != 0) {
nd->nd_savedcurstateid =
nd->nd_curstateid;
nd->nd_flag |= ND_SAVEDCURSTATEID;
}
} else {
nd->nd_repstat = NFSERR_NOFILEHANDLE;
}
break;
case NFSV4OP_RESTOREFH:
if (savevp) {
nd->nd_repstat = 0;
/* If vp == savevp, a no-op */
if (vp != savevp) {
VREF(savevp);
vrele(vp);
vp = savevp;
vpnes = savevpnes;
cur_fsid = save_fsid;
}
if ((nd->nd_flag & ND_SAVEDCURSTATEID) != 0) {
nd->nd_curstateid =
nd->nd_savedcurstateid;
nd->nd_flag |= ND_CURSTATEID;
}
} else {
nd->nd_repstat = NFSERR_RESTOREFH;
}
break;
default:
/*
* Allow a Lookup, Getattr, GetFH, Secinfo on an
* non-exported directory if
* nfs_rootfhset. Do I need to allow any other Ops?
* (You can only have a non-exported vpnes if
* nfs_rootfhset is true. See nfsd_fhtovp())
* Allow AUTH_SYS to be used for file systems
* exported GSS only for certain Ops, to allow
* clients to do mounts more easily.
*/
if (nfsv4_opflag[op].needscfh && vp) {
if (!NFSVNO_EXPORTED(&vpnes) &&
op != NFSV4OP_LOOKUP &&
op != NFSV4OP_GETATTR &&
op != NFSV4OP_GETFH &&
op != NFSV4OP_ACCESS &&
op != NFSV4OP_READLINK &&
op != NFSV4OP_SECINFO)
nd->nd_repstat = NFSERR_NOFILEHANDLE;
else if (nfsvno_testexp(nd, &vpnes) &&
op != NFSV4OP_LOOKUP &&
op != NFSV4OP_GETFH &&
op != NFSV4OP_GETATTR &&
op != NFSV4OP_SECINFO)
nd->nd_repstat = NFSERR_WRONGSEC;
if (nd->nd_repstat) {
if (op == NFSV4OP_SETATTR) {
/*
* Setattr reply requires a bitmap
* even for errors like these.
*/
NFSM_BUILD(tl, u_int32_t *,
NFSX_UNSIGNED);
*tl = 0;
}
break;
}
}
if (nfsv4_opflag[op].retfh == 1) {
if (!vp) {
nd->nd_repstat = NFSERR_NOFILEHANDLE;
break;
}
VREF(vp);
if (nfsv4_opflag[op].modifyfs)
vn_start_write(vp, &temp_mp, V_WAIT);
error = (*(nfsrv4_ops1[op]))(nd, isdgram, vp,
&nvp, (fhandle_t *)fh.nfsrvfh_data, &vpnes);
if (!error && !nd->nd_repstat) {
if (op == NFSV4OP_LOOKUP || op == NFSV4OP_LOOKUPP) {
new_mp = nvp->v_mount;
if (cur_fsid.val[0] !=
new_mp->mnt_stat.f_fsid.val[0] ||
cur_fsid.val[1] !=
new_mp->mnt_stat.f_fsid.val[1]) {
/* crossed a server mount point */
nd->nd_repstat = nfsvno_checkexp(new_mp,
nd->nd_nam, &nes, &credanon);
if (!nd->nd_repstat)
nd->nd_repstat = nfsd_excred(nd,
&nes, credanon);
if (credanon != NULL)
crfree(credanon);
if (!nd->nd_repstat) {
vpnes = nes;
cur_fsid = new_mp->mnt_stat.f_fsid;
}
}
/* Lookup ops return a locked vnode */
NFSVOPUNLOCK(nvp, 0);
}
if (!nd->nd_repstat) {
vrele(vp);
vp = nvp;
} else
vrele(nvp);
}
if (nfsv4_opflag[op].modifyfs)
vn_finished_write(temp_mp);
} else if (nfsv4_opflag[op].retfh == 2) {
if (vp == NULL || savevp == NULL) {
nd->nd_repstat = NFSERR_NOFILEHANDLE;
break;
} else if (cur_fsid.val[0] != save_fsid.val[0] ||
cur_fsid.val[1] != save_fsid.val[1]) {
nd->nd_repstat = NFSERR_XDEV;
break;
}
if (nfsv4_opflag[op].modifyfs)
vn_start_write(savevp, &temp_mp, V_WAIT);
if (NFSVOPLOCK(savevp, LK_EXCLUSIVE) == 0) {
VREF(vp);
VREF(savevp);
error = (*(nfsrv4_ops2[op]))(nd, isdgram,
savevp, vp, &savevpnes, &vpnes);
} else
nd->nd_repstat = NFSERR_PERM;
if (nfsv4_opflag[op].modifyfs)
vn_finished_write(temp_mp);
} else {
if (nfsv4_opflag[op].retfh != 0)
panic("nfsrvd_compound");
if (nfsv4_opflag[op].needscfh) {
if (vp != NULL) {
lktype = nfsv4_opflag[op].lktype;
if (nfsv4_opflag[op].modifyfs) {
vn_start_write(vp, &temp_mp,
V_WAIT);
if (op == NFSV4OP_WRITE &&
MNT_SHARED_WRITES(temp_mp))
lktype = LK_SHARED;
}
if (NFSVOPLOCK(vp, lktype) == 0)
VREF(vp);
else
nd->nd_repstat = NFSERR_PERM;
} else {
nd->nd_repstat = NFSERR_NOFILEHANDLE;
if (op == NFSV4OP_SETATTR) {
/*
* Setattr reply requires a
* bitmap even for errors like
* these.
*/
NFSM_BUILD(tl, u_int32_t *,
NFSX_UNSIGNED);
*tl = 0;
}
break;
}
if (nd->nd_repstat == 0)
error = (*(nfsrv4_ops0[op]))(nd,
isdgram, vp, &vpnes);
if (nfsv4_opflag[op].modifyfs)
vn_finished_write(temp_mp);
} else {
error = (*(nfsrv4_ops0[op]))(nd, isdgram,
NULL, &vpnes);
}
}
}
if (error) {
if (error == EBADRPC || error == NFSERR_BADXDR) {
nd->nd_repstat = NFSERR_BADXDR;
} else {
nd->nd_repstat = error;
printf("nfsv4 comperr0=%d\n", error);
}
error = 0;
}
if (statsinprog != 0) {
nfsrvd_statend(op, /*bytes*/ 0, /*now*/ NULL,
/*then*/ &start_time);
statsinprog = 0;
}
retops++;
if (nd->nd_repstat) {
*repp = nfsd_errmap(nd);
break;
} else {
*repp = 0; /* NFS4_OK */
}
}
nfsmout:
if (statsinprog != 0) {
nfsrvd_statend(op, /*bytes*/ 0, /*now*/ NULL,
/*then*/ &start_time);
statsinprog = 0;
}
if (error) {
if (error == EBADRPC || error == NFSERR_BADXDR)
nd->nd_repstat = NFSERR_BADXDR;
else
printf("nfsv4 comperr1=%d\n", error);
}
if (taglen == -1) {
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
*tl++ = 0;
*tl = 0;
} else {
*retopsp = txdr_unsigned(retops);
}
if (vp)
vrele(vp);
if (savevp)
vrele(savevp);
NFSLOCKV4ROOTMUTEX();
nfsv4_relref(&nfsv4rootfs_lock);
NFSUNLOCKV4ROOTMUTEX();
NFSEXITCODE2(0, nd);
}
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