3745c395ec
to kproc_xxx as they actually make whole processes. Thos makes way for us to add REAL kthread_create() and friends that actually make theads. it turns out that most of these calls actually end up being moved back to the thread version when it's added. but we need to make this cosmetic change first. I'd LOVE to do this rename in 7.0 so that we can eventually MFC the new kthread_xxx() calls.
879 lines
22 KiB
C
879 lines
22 KiB
C
/* $Id: nfs_vfsops.c,v 1.38 2003/11/05 14:59:01 rees Exp $ */
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/*-
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* copyright (c) 2003
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* the regents of the university of michigan
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* all rights reserved
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*
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* permission is granted to use, copy, create derivative works and redistribute
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* this software and such derivative works for any purpose, so long as the name
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* of the university of michigan is not used in any advertising or publicity
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* pertaining to the use or distribution of this software without specific,
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* written prior authorization. if the above copyright notice or any other
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* identification of the university of michigan is included in any copy of any
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* portion of this software, then the disclaimer below must also be included.
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*
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* this software is provided as is, without representation from the university
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* of michigan as to its fitness for any purpose, and without warranty by the
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* university of michigan of any kind, either express or implied, including
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* without limitation the implied warranties of merchantability and fitness for
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* a particular purpose. the regents of the university of michigan shall not be
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* liable for any damages, including special, indirect, incidental, or
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* consequential damages, with respect to any claim arising out of or in
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* connection with the use of the software, even if it has been or is hereafter
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* advised of the possibility of such damages.
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*/
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/*-
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* Copyright (c) 1989, 1993, 1995
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)nfs_vfsops.c 8.12 (Berkeley) 5/20/95
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_bootp.h"
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#include "opt_nfsroot.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/kthread.h>
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#include <sys/limits.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/module.h>
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#include <sys/mount.h>
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#include <sys/proc.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/unistd.h>
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#include <sys/vnode.h>
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#include <sys/signalvar.h>
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#include <vm/vm.h>
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#include <vm/vm_extern.h>
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#include <vm/uma.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <rpc/rpcclnt.h>
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#include <nfs/rpcv2.h>
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#include <nfs/nfsproto.h>
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#include <nfsclient/nfs.h>
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#include <nfs4client/nfs4.h>
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#include <nfsclient/nfsnode.h>
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#include <nfsclient/nfsmount.h>
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#include <nfs/xdr_subs.h>
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#include <nfsclient/nfsm_subs.h>
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#include <nfsclient/nfsdiskless.h>
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#include <nfs4client/nfs4m_subs.h>
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#include <nfs4client/nfs4_vfs.h>
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#include <nfs4client/nfs4_dev.h>
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#include <nfs4client/nfs4_idmap.h>
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SYSCTL_NODE(_vfs, OID_AUTO, nfs4, CTLFLAG_RW, 0, "NFS4 filesystem");
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SYSCTL_STRUCT(_vfs_nfs4, NFS_NFSSTATS, nfsstats, CTLFLAG_RD,
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&nfsstats, nfsstats, "S,nfsstats");
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static void nfs4_decode_args(struct nfsmount *nmp, struct nfs_args *argp);
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static void nfs4_daemon(void *arg);
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static int mountnfs(struct nfs_args *, struct mount *,
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struct sockaddr *, char *, struct vnode **,
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struct ucred *cred);
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static int nfs4_do_setclientid(struct nfsmount *nmp, struct ucred *cred);
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static vfs_mount_t nfs4_mount;
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static vfs_cmount_t nfs4_cmount;
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static vfs_unmount_t nfs4_unmount;
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static vfs_root_t nfs4_root;
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static vfs_statfs_t nfs4_statfs;
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static vfs_sync_t nfs4_sync;
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/*
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* nfs vfs operations.
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*/
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static struct vfsops nfs4_vfsops = {
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.vfs_init = nfs4_init,
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.vfs_mount = nfs4_mount,
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.vfs_cmount = nfs4_cmount,
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.vfs_root = nfs4_root,
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.vfs_statfs = nfs4_statfs,
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.vfs_sync = nfs4_sync,
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.vfs_uninit = nfs4_uninit,
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.vfs_unmount = nfs4_unmount,
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};
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VFS_SET(nfs4_vfsops, nfs4, VFCF_NETWORK);
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static struct nfs_rpcops nfs4_rpcops = {
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nfs4_readrpc,
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nfs4_writerpc,
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nfs4_writebp,
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nfs4_readlinkrpc,
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nfs4_invaldir,
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nfs4_commit,
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};
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/* So that loader and kldload(2) can find us, wherever we are.. */
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MODULE_VERSION(nfs4, 1);
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void nfsargs_ntoh(struct nfs_args *);
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int
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nfs4_init(struct vfsconf *vfsp)
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{
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rpcclnt_init();
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nfs4dev_init();
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idmap_init();
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nfsm_v4init();
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return (0);
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}
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int
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nfs4_uninit(struct vfsconf *vfsp)
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{
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rpcclnt_uninit();
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nfs4dev_uninit();
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idmap_uninit();
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return (0);
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}
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/*
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* nfs statfs call
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*/
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static int
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nfs4_statfs(struct mount *mp, struct statfs *sbp, struct thread *td)
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{
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struct vnode *vp;
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struct nfs_statfs *sfp;
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caddr_t bpos, dpos;
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struct nfsmount *nmp = VFSTONFS(mp);
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int error = 0;
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struct mbuf *mreq, *mrep = NULL, *md, *mb;
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struct nfsnode *np;
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struct nfs4_compound cp;
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struct nfs4_oparg_getattr ga;
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struct nfsv4_fattr *fap = &ga.fa;
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#ifndef nolint
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sfp = NULL;
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#endif
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error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np, LK_EXCLUSIVE);
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if (error)
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return (error);
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vp = NFSTOV(np);
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nfsstats.rpccnt[NFSPROC_FSSTAT]++;
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mreq = nfsm_reqhead(vp, NFSV4PROC_COMPOUND, NFSX_FH(1));
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mb = mreq;
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bpos = mtod(mb, caddr_t);
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ga.bm = &nfsv4_fsattrbm;
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nfs_v4initcompound(&cp);
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nfsm_v4build_compound(&cp, "statfs()");
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nfsm_v4build_putfh(&cp, vp);
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nfsm_v4build_getattr(&cp, &ga);
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nfsm_v4build_finalize(&cp);
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nfsm_request(vp, NFSV4PROC_COMPOUND, td, td->td_ucred);
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if (error != 0)
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goto nfsmout;
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nfsm_v4dissect_compound(&cp);
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nfsm_v4dissect_putfh(&cp);
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nfsm_v4dissect_getattr(&cp, &ga);
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nfs4_vfsop_statfs(fap, sbp, mp);
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nfsmout:
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error = nfs_v4postop(&cp, error);
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vput(vp);
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if (mrep != NULL)
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m_freem(mrep);
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return (error);
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}
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static void
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nfs4_decode_args(struct nfsmount *nmp, struct nfs_args *argp)
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{
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int s;
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int adjsock;
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int maxio;
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s = splnet();
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/*
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* Silently clear NFSMNT_NOCONN if it's a TCP mount, it makes
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* no sense in that context. Also, set appropriate retransmit
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* and soft timeout behavior.
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*/
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if (argp->sotype == SOCK_STREAM) {
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nmp->nm_flag &= ~NFSMNT_NOCONN;
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nmp->nm_flag |= NFSMNT_DUMBTIMR;
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nmp->nm_timeo = NFS_MAXTIMEO;
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nmp->nm_retry = NFS_RETRANS_TCP;
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}
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nmp->nm_flag &= ~NFSMNT_RDIRPLUS;
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/* Re-bind if rsrvd port requested and wasn't on one */
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adjsock = !(nmp->nm_flag & NFSMNT_RESVPORT)
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&& (argp->flags & NFSMNT_RESVPORT);
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/* Also re-bind if we're switching to/from a connected UDP socket */
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adjsock |= ((nmp->nm_flag & NFSMNT_NOCONN) !=
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(argp->flags & NFSMNT_NOCONN));
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/* Update flags atomically. Don't change the lock bits. */
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nmp->nm_flag = argp->flags | nmp->nm_flag;
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splx(s);
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if ((argp->flags & NFSMNT_TIMEO) && argp->timeo > 0) {
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nmp->nm_timeo = (argp->timeo * NFS_HZ + 5) / 10;
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if (nmp->nm_timeo < NFS_MINTIMEO)
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nmp->nm_timeo = NFS_MINTIMEO;
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else if (nmp->nm_timeo > NFS_MAXTIMEO)
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nmp->nm_timeo = NFS_MAXTIMEO;
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}
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if ((argp->flags & NFSMNT_RETRANS) && argp->retrans > 1) {
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nmp->nm_retry = argp->retrans;
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if (nmp->nm_retry > NFS_MAXREXMIT)
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nmp->nm_retry = NFS_MAXREXMIT;
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}
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if (argp->flags & NFSMNT_NFSV3) {
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if (argp->sotype == SOCK_DGRAM)
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maxio = NFS_MAXDGRAMDATA;
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else
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maxio = NFS_MAXDATA;
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} else
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maxio = NFS_V2MAXDATA;
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if ((argp->flags & NFSMNT_WSIZE) && argp->wsize > 0) {
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nmp->nm_wsize = argp->wsize;
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/* Round down to multiple of blocksize */
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nmp->nm_wsize &= ~(NFS_FABLKSIZE - 1);
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if (nmp->nm_wsize <= 0)
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nmp->nm_wsize = NFS_FABLKSIZE;
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}
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if (nmp->nm_wsize > maxio)
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nmp->nm_wsize = maxio;
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if (nmp->nm_wsize > MAXBSIZE)
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nmp->nm_wsize = MAXBSIZE;
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if ((argp->flags & NFSMNT_RSIZE) && argp->rsize > 0) {
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nmp->nm_rsize = argp->rsize;
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/* Round down to multiple of blocksize */
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nmp->nm_rsize &= ~(NFS_FABLKSIZE - 1);
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if (nmp->nm_rsize <= 0)
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nmp->nm_rsize = NFS_FABLKSIZE;
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}
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if (nmp->nm_rsize > maxio)
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nmp->nm_rsize = maxio;
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if (nmp->nm_rsize > MAXBSIZE)
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nmp->nm_rsize = MAXBSIZE;
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if ((argp->flags & NFSMNT_READDIRSIZE) && argp->readdirsize > 0) {
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nmp->nm_readdirsize = argp->readdirsize;
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}
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if (nmp->nm_readdirsize > maxio)
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nmp->nm_readdirsize = maxio;
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if (nmp->nm_readdirsize > nmp->nm_rsize)
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nmp->nm_readdirsize = nmp->nm_rsize;
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if ((argp->flags & NFSMNT_ACREGMIN) && argp->acregmin >= 0)
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nmp->nm_acregmin = argp->acregmin;
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else
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nmp->nm_acregmin = NFS_MINATTRTIMO;
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if ((argp->flags & NFSMNT_ACREGMAX) && argp->acregmax >= 0)
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nmp->nm_acregmax = argp->acregmax;
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else
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nmp->nm_acregmax = NFS_MAXATTRTIMO;
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if ((argp->flags & NFSMNT_ACDIRMIN) && argp->acdirmin >= 0)
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nmp->nm_acdirmin = argp->acdirmin;
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else
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nmp->nm_acdirmin = NFS_MINDIRATTRTIMO;
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if ((argp->flags & NFSMNT_ACDIRMAX) && argp->acdirmax >= 0)
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nmp->nm_acdirmax = argp->acdirmax;
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else
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nmp->nm_acdirmax = NFS_MAXDIRATTRTIMO;
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if (nmp->nm_acdirmin > nmp->nm_acdirmax)
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nmp->nm_acdirmin = nmp->nm_acdirmax;
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if (nmp->nm_acregmin > nmp->nm_acregmax)
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nmp->nm_acregmin = nmp->nm_acregmax;
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if ((argp->flags & NFSMNT_MAXGRPS) && argp->maxgrouplist >= 0) {
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if (argp->maxgrouplist <= NFS_MAXGRPS)
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nmp->nm_numgrps = argp->maxgrouplist;
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else
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nmp->nm_numgrps = NFS_MAXGRPS;
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}
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if ((argp->flags & NFSMNT_READAHEAD) && argp->readahead >= 0) {
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if (argp->readahead <= NFS_MAXRAHEAD)
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nmp->nm_readahead = argp->readahead;
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else
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nmp->nm_readahead = NFS_MAXRAHEAD;
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}
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if ((argp->flags & NFSMNT_DEADTHRESH) && argp->deadthresh >= 0) {
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if (argp->deadthresh <= NFS_MAXDEADTHRESH)
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nmp->nm_deadthresh = argp->deadthresh;
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else
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nmp->nm_deadthresh = NFS_MAXDEADTHRESH;
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}
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adjsock |= ((nmp->nm_sotype != argp->sotype) ||
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(nmp->nm_soproto != argp->proto));
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nmp->nm_sotype = argp->sotype;
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nmp->nm_soproto = argp->proto;
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if (nmp->nm_rpcclnt.rc_so && adjsock) {
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nfs_safedisconnect(nmp);
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if (nmp->nm_sotype == SOCK_DGRAM) {
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while (nfs4_connect(nmp)) {
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printf("nfs4_decode_args: retrying connect\n");
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(void)tsleep(&lbolt, PSOCK, "nfscon", 0);
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}
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}
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}
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}
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/*
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* VFS Operations.
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*
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* mount system call
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* It seems a bit dumb to copyinstr() the host and path here and then
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* bcopy() them in mountnfs(), but I wanted to detect errors before
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* doing the sockargs() call because sockargs() allocates an mbuf and
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* an error after that means that I have to release the mbuf.
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*/
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/* ARGSUSED */
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static int
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nfs4_cmount(struct mntarg *ma, void *data, int flags, struct thread *td)
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{
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struct nfs_args args;
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int error;
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error = copyin(data, &args, sizeof(struct nfs_args));
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if (error)
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return (error);
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ma = mount_arg(ma, "nfs_args", &args, sizeof args);
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error = kernel_mount(ma, flags);
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return (error);
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}
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static int
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nfs4_mount(struct mount *mp, struct thread *td)
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{
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int error;
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struct nfs_args args;
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struct sockaddr *nam;
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struct vnode *vp;
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char hst[MNAMELEN];
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size_t len;
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if (mp->mnt_flag & MNT_ROOTFS) {
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printf("nfs4_mountroot not supported\n");
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return (EINVAL);
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}
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error = vfs_copyopt(mp->mnt_optnew, "nfs_args", &args, sizeof args);
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if (error)
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return (error);
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if (args.version != NFS_ARGSVERSION)
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return (EPROGMISMATCH);
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if (mp->mnt_flag & MNT_UPDATE) {
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struct nfsmount *nmp = VFSTONFS(mp);
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if (nmp == NULL)
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return (EIO);
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/*
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* When doing an update, we can't change from or to
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* v3, switch lockd strategies or change cookie translation
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*/
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args.flags = (args.flags &
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~(NFSMNT_NFSV3 | NFSMNT_NFSV4 | NFSMNT_NOLOCKD)) |
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(nmp->nm_flag &
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(NFSMNT_NFSV3 | NFSMNT_NFSV4 | NFSMNT_NOLOCKD));
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nfs4_decode_args(nmp, &args);
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return (0);
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}
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error = copyinstr(args.hostname, hst, MNAMELEN-1, &len);
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if (error)
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return (error);
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bzero(&hst[len], MNAMELEN - len);
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/* sockargs() call must be after above copyin() calls */
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error = getsockaddr(&nam, (caddr_t)args.addr, args.addrlen);
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if (error)
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return (error);
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error = mountnfs(&args, mp, nam, hst, &vp, td->td_ucred);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* renew should be done async
|
|
* should re-scan mount queue each time
|
|
*/
|
|
struct proc *nfs4_daemonproc;
|
|
|
|
static int
|
|
nfs4_do_renew(struct nfsmount *nmp, struct ucred *cred)
|
|
{
|
|
struct nfs4_compound cp;
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
caddr_t bpos, dpos;
|
|
int error;
|
|
|
|
mreq = nfsm_reqhead(NULL, NFSV4PROC_COMPOUND, sizeof(uint64_t));
|
|
mb = mreq;
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_do_renew()");
|
|
nfsm_v4build_renew(&cp, nmp->nm_clientid);
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
nfsm_request_mnt(nmp, NFSV4PROC_COMPOUND, curthread, cred);
|
|
if (error != 0)
|
|
goto nfsmout;
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
nfsm_v4dissect_renew(&cp);
|
|
nmp->nm_last_renewal = time_second;
|
|
return (0);
|
|
|
|
nfsmout:
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
/* XXX */
|
|
if (mrep != NULL)
|
|
m_freem(mrep);
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
nfs4_daemon(void *arg)
|
|
{
|
|
struct mount *mp;
|
|
struct nfsmount *nmp;
|
|
int nmounts;
|
|
|
|
while (1) {
|
|
nmounts = 0;
|
|
mtx_lock(&mountlist_mtx);
|
|
TAILQ_FOREACH(mp, &mountlist, mnt_list) {
|
|
if (strcmp(mp->mnt_vfc->vfc_name, "nfs4") != 0)
|
|
continue;
|
|
nmounts++;
|
|
nmp = VFSTONFS(mp);
|
|
if (time_second < nmp->nm_last_renewal + nmp->nm_lease_time - 4)
|
|
continue;
|
|
mtx_unlock(&mountlist_mtx);
|
|
mtx_lock(&Giant);
|
|
nfs4_do_renew(nmp, (struct ucred *) arg);
|
|
mtx_unlock(&Giant);
|
|
mtx_lock(&mountlist_mtx);
|
|
}
|
|
mtx_unlock(&mountlist_mtx);
|
|
|
|
/* Must kill the daemon here, or module unload will cause a panic */
|
|
if (nmounts == 0) {
|
|
mtx_lock(&Giant);
|
|
nfs4_daemonproc = NULL;
|
|
mtx_unlock(&Giant);
|
|
/*printf("nfsv4 renewd exiting\n");*/
|
|
kproc_exit(0);
|
|
}
|
|
tsleep(&nfs4_daemonproc, PVFS, "nfs4", 2 * hz);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Common code for mount and mountroot
|
|
*/
|
|
static int
|
|
mountnfs(struct nfs_args *argp, struct mount *mp, struct sockaddr *nam,
|
|
char *hst, struct vnode **vpp, struct ucred *cred)
|
|
{
|
|
struct nfsmount *nmp;
|
|
char *rpth, *cp1, *cp2;
|
|
int nlkup = 0, error;
|
|
struct nfs4_compound cp;
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
caddr_t bpos, dpos;
|
|
struct nfs4_oparg_lookup lkup;
|
|
struct nfs4_oparg_getfh gfh;
|
|
struct nfs4_oparg_getattr ga;
|
|
struct thread *td = curthread; /* XXX */
|
|
|
|
if (mp->mnt_flag & MNT_UPDATE) {
|
|
nmp = VFSTONFS(mp);
|
|
/* update paths, file handles, etc, here XXX */
|
|
FREE(nam, M_SONAME);
|
|
return (0);
|
|
} else {
|
|
nmp = uma_zalloc(nfsmount_zone, M_WAITOK);
|
|
bzero((caddr_t)nmp, sizeof (struct nfsmount));
|
|
TAILQ_INIT(&nmp->nm_bufq);
|
|
mp->mnt_data = nmp;
|
|
}
|
|
|
|
vfs_getnewfsid(mp);
|
|
nmp->nm_mountp = mp;
|
|
mtx_init(&nmp->nm_mtx, "NFS4mount lock", NULL, MTX_DEF);
|
|
|
|
nmp->nm_maxfilesize = 0xffffffffLL;
|
|
nmp->nm_timeo = NFS_TIMEO;
|
|
nmp->nm_retry = NFS_RETRANS;
|
|
nmp->nm_wsize = NFS_WSIZE;
|
|
nmp->nm_rsize = NFS_RSIZE;
|
|
nmp->nm_readdirsize = NFS_READDIRSIZE;
|
|
nmp->nm_numgrps = NFS_MAXGRPS;
|
|
nmp->nm_readahead = NFS_DEFRAHEAD;
|
|
nmp->nm_deadthresh = NFS_MAXDEADTHRESH;
|
|
vfs_mountedfrom(mp, hst);
|
|
nmp->nm_nam = nam;
|
|
/* Set up the sockets and per-host congestion */
|
|
nmp->nm_sotype = argp->sotype;
|
|
nmp->nm_soproto = argp->proto;
|
|
nmp->nm_rpcops = &nfs4_rpcops;
|
|
/* XXX */
|
|
mp->mnt_stat.f_iosize = PAGE_SIZE;
|
|
|
|
argp->flags |= (NFSMNT_NFSV3 | NFSMNT_NFSV4);
|
|
|
|
nfs4_decode_args(nmp, argp);
|
|
|
|
if ((error = nfs4_connect(nmp)))
|
|
goto bad;
|
|
|
|
mreq = nfsm_reqhead(NULL, NFSV4PROC_COMPOUND, NFSX_FH(1));
|
|
mb = mreq;
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
ga.bm = &nfsv4_fsinfobm;
|
|
nfs_v4initcompound(&cp);
|
|
|
|
/* Get remote path */
|
|
rpth = hst;
|
|
strsep(&rpth, ":");
|
|
|
|
nfsm_v4build_compound(&cp, "mountnfs()");
|
|
nfsm_v4build_putrootfh(&cp);
|
|
for (cp1 = rpth; cp1 && *cp1; cp1 = cp2) {
|
|
while (*cp1 == '/')
|
|
cp1++;
|
|
if (!*cp1)
|
|
break;
|
|
for (cp2 = cp1; *cp2 && *cp2 != '/'; cp2++)
|
|
;
|
|
lkup.name = cp1;
|
|
lkup.namelen = cp2 - cp1;
|
|
nfsm_v4build_lookup(&cp, &lkup);
|
|
nlkup++;
|
|
}
|
|
nfsm_v4build_getfh(&cp, &gfh);
|
|
nfsm_v4build_getattr(&cp, &ga);
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
nfsm_request_mnt(nmp, NFSV4PROC_COMPOUND, td, cred);
|
|
if (error != 0)
|
|
goto nfsmout;
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
nfsm_v4dissect_putrootfh(&cp);
|
|
while (nlkup--)
|
|
nfsm_v4dissect_lookup(&cp);
|
|
nfsm_v4dissect_getfh(&cp, &gfh);
|
|
nfsm_v4dissect_getattr(&cp, &ga);
|
|
|
|
nfs4_vfsop_fsinfo(&ga.fa, nmp);
|
|
nmp->nm_state |= NFSSTA_GOTFSINFO;
|
|
|
|
/* Copy root fh into nfsmount. */
|
|
nmp->nm_fhsize = gfh.fh_len;
|
|
bcopy(&gfh.fh_val, nmp->nm_fh, nmp->nm_fhsize);
|
|
nmp->nm_last_renewal = time_second;
|
|
|
|
if ((error = nfs4_do_setclientid(nmp, cred)) != 0)
|
|
goto nfsmout;
|
|
|
|
/* Start renewd if it isn't already running */
|
|
if (nfs4_daemonproc == NULL)
|
|
kproc_create(nfs4_daemon, crdup(cred), &nfs4_daemonproc,
|
|
(RFPROC|RFMEM), 0, "nfs4rd");
|
|
|
|
return (0);
|
|
nfsmout:
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
/* XXX */
|
|
if (mrep != NULL)
|
|
m_freem(mrep);
|
|
bad:
|
|
mtx_destroy(&nmp->nm_mtx);
|
|
nfs4_disconnect(nmp);
|
|
uma_zfree(nfsmount_zone, nmp);
|
|
FREE(nam, M_SONAME);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* unmount system call
|
|
*/
|
|
static int
|
|
nfs4_unmount(struct mount *mp, int mntflags, struct thread *td)
|
|
{
|
|
struct nfsmount *nmp;
|
|
int error, flags = 0;
|
|
|
|
if (mntflags & MNT_FORCE)
|
|
flags |= FORCECLOSE;
|
|
nmp = VFSTONFS(mp);
|
|
/*
|
|
* Goes something like this..
|
|
* - Call vflush(, td) to clear out vnodes for this filesystem
|
|
* - Close the socket
|
|
* - Free up the data structures
|
|
*/
|
|
/* In the forced case, cancel any outstanding requests. */
|
|
if (flags & FORCECLOSE) {
|
|
error = nfs_nmcancelreqs(nmp);
|
|
if (error)
|
|
return (error);
|
|
nfs4dev_purge();
|
|
}
|
|
|
|
error = vflush(mp, 0, flags, td);
|
|
if (error)
|
|
return (error);
|
|
|
|
/*
|
|
* We are now committed to the unmount.
|
|
*/
|
|
nfs4_disconnect(nmp);
|
|
FREE(nmp->nm_nam, M_SONAME);
|
|
|
|
/* XXX there's a race condition here for SMP */
|
|
wakeup(&nfs4_daemonproc);
|
|
|
|
mtx_destroy(&nmp->nm_mtx);
|
|
uma_zfree(nfsmount_zone, nmp);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Return root of a filesystem
|
|
*/
|
|
static int
|
|
nfs4_root(struct mount *mp, int flags, struct vnode **vpp, struct thread *td)
|
|
{
|
|
struct vnode *vp;
|
|
struct nfsmount *nmp;
|
|
struct nfsnode *np;
|
|
int error;
|
|
|
|
nmp = VFSTONFS(mp);
|
|
error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np,
|
|
LK_EXCLUSIVE);
|
|
if (error)
|
|
return (error);
|
|
vp = NFSTOV(np);
|
|
if (vp->v_type == VNON)
|
|
vp->v_type = VDIR;
|
|
vp->v_vflag |= VV_ROOT;
|
|
*vpp = vp;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Flush out the buffer cache
|
|
*/
|
|
static int
|
|
nfs4_sync(struct mount *mp, int waitfor, struct thread *td)
|
|
{
|
|
struct vnode *vp, *mvp;
|
|
int error, allerror = 0;
|
|
|
|
/*
|
|
* Force stale buffer cache information to be flushed.
|
|
*/
|
|
MNT_ILOCK(mp);
|
|
loop:
|
|
MNT_VNODE_FOREACH(vp, mp, mvp) {
|
|
VI_LOCK(vp);
|
|
MNT_IUNLOCK(mp);
|
|
if (VOP_ISLOCKED(vp, NULL) ||
|
|
vp->v_bufobj.bo_dirty.bv_cnt == 0 ||
|
|
waitfor == MNT_LAZY) {
|
|
VI_UNLOCK(vp);
|
|
MNT_ILOCK(mp);
|
|
continue;
|
|
}
|
|
if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td)) {
|
|
MNT_ILOCK(mp);
|
|
MNT_VNODE_FOREACH_ABORT_ILOCKED(mp, mvp);
|
|
goto loop;
|
|
}
|
|
error = VOP_FSYNC(vp, waitfor, td);
|
|
if (error)
|
|
allerror = error;
|
|
VOP_UNLOCK(vp, 0, td);
|
|
vrele(vp);
|
|
|
|
MNT_ILOCK(mp);
|
|
}
|
|
MNT_IUNLOCK(mp);
|
|
return (allerror);
|
|
}
|
|
|
|
static int
|
|
nfs4_do_setclientid(struct nfsmount *nmp, struct ucred *cred)
|
|
{
|
|
struct nfs4_oparg_setclientid scid;
|
|
struct nfs4_compound cp;
|
|
struct mbuf *mreq, *mrep = NULL, *md, *mb;
|
|
caddr_t bpos, dpos;
|
|
struct route ro;
|
|
char *ipsrc = NULL, uaddr[24], name[24];
|
|
int try = 0;
|
|
static unsigned long seq;
|
|
int error;
|
|
|
|
#ifndef NFS4_USE_RPCCLNT
|
|
return (0);
|
|
#endif
|
|
if (nmp->nm_clientid) {
|
|
printf("nfs4_do_setclientid: already have clientid!\n");
|
|
error = 0;
|
|
goto nfsmout;
|
|
}
|
|
|
|
/* Try not to re-use clientids */
|
|
if (seq == 0)
|
|
seq = time_second;
|
|
|
|
#ifdef NFS4_USE_RPCCLNT
|
|
scid.cb_netid = (nmp->nm_rpcclnt.rc_sotype == SOCK_STREAM) ? "tcp" : "udp";
|
|
#endif
|
|
scid.cb_netid = "tcp";
|
|
scid.cb_netidlen = 3;
|
|
scid.cb_prog = 0x1234; /* XXX */
|
|
|
|
/* Do a route lookup to find our source address for talking to this server */
|
|
bzero(&ro, sizeof ro);
|
|
|
|
#ifdef NFS4_USE_RPCCLNT
|
|
ro.ro_dst = *nmp->nm_rpcclnt.rc_name;
|
|
#endif
|
|
rtalloc(&ro);
|
|
if (ro.ro_rt == NULL) {
|
|
error = EHOSTUNREACH;
|
|
goto nfsmout;
|
|
}
|
|
ipsrc = inet_ntoa(IA_SIN(ifatoia(ro.ro_rt->rt_ifa))->sin_addr);
|
|
sprintf(uaddr, "%s.12.48", ipsrc);
|
|
scid.cb_univaddr = uaddr;
|
|
scid.cb_univaddrlen = strlen(uaddr);
|
|
RTFREE(ro.ro_rt);
|
|
|
|
try_again:
|
|
sprintf(name, "%s-%d", ipsrc, (int) ((seq + try) % 1000000L));
|
|
scid.namelen = strlen(name);
|
|
scid.name = name;
|
|
nfs_v4initcompound(&cp);
|
|
|
|
mreq = nfsm_reqhead(NULL, NFSV4PROC_COMPOUND, NFSX_FH(1));
|
|
mb = mreq;
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_do_setclientid()");
|
|
nfsm_v4build_setclientid(&cp, &scid);
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
nfsm_request_mnt(nmp, NFSV4PROC_COMPOUND, curthread, cred);
|
|
if (error != 0)
|
|
goto nfsmout;
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
nfsm_v4dissect_setclientid(&cp, &scid);
|
|
nmp->nm_clientid = scid.clientid;
|
|
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
/* Confirm */
|
|
m_freem(mrep);
|
|
mreq = nfsm_reqhead(NULL, NFSV4PROC_COMPOUND, NFSX_FH(1));
|
|
mb = mreq;
|
|
bpos = mtod(mb, caddr_t);
|
|
|
|
nfs_v4initcompound(&cp);
|
|
|
|
nfsm_v4build_compound(&cp, "nfs4_do_setclientid() (confirm)");
|
|
nfsm_v4build_setclientid_confirm(&cp, &scid);
|
|
nfsm_v4build_finalize(&cp);
|
|
|
|
nfsm_request_mnt(nmp, NFSV4PROC_COMPOUND, curthread, cred);
|
|
if (error != 0)
|
|
goto nfsmout;
|
|
|
|
nfsm_v4dissect_compound(&cp);
|
|
nfsm_v4dissect_setclientid_confirm(&cp);
|
|
|
|
nfsmout:
|
|
error = nfs_v4postop(&cp, error);
|
|
|
|
if (mrep)
|
|
m_freem(mrep);
|
|
if (error == NFSERR_CLID_INUSE && (++try < NFS4_SETCLIENTID_MAXTRIES))
|
|
goto try_again;
|
|
|
|
return (error);
|
|
}
|