939 lines
24 KiB
C
939 lines
24 KiB
C
/* $FreeBSD$ */
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/* $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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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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 <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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#ifdef NFS_DEBUG
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int nfs_debug;
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SYSCTL_INT(_vfs_nfs4, OID_AUTO, debug, CTLFLAG_RW, &nfs_debug, 0, "");
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#endif
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static void nfs_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 *, 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 nfs_mount;
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static vfs_unmount_t nfs_unmount;
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static vfs_root_t nfs_root;
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static vfs_statfs_t nfs_statfs;
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static vfs_sync_t nfs_sync;
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/*
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* nfs vfs operations.
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*/
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static struct vfsops nfs_vfsops = {
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.vfs_init = nfs4_init,
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.vfs_mount = nfs_mount,
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.vfs_root = nfs_root,
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.vfs_statfs = nfs_statfs,
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.vfs_sync = nfs_sync,
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.vfs_uninit = nfs4_uninit,
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.vfs_unmount = nfs_unmount,
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};
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VFS_SET(nfs_vfsops, nfs4, VFCF_NETWORK);
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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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#ifdef NFS4DISKLESS
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/*
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* This structure must be filled in by a primary bootstrap or bootstrap
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* server for a diskless/dataless machine. It is initialized below just
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* to ensure that it is allocated to initialized data (.data not .bss).
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*/
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struct nfs_diskless nfs_diskless = { { { 0 } } };
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struct nfsv3_diskless nfsv3_diskless = { { { 0 } } };
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int nfs_diskless_valid = 0;
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SYSCTL_INT(_vfs_nfs4, OID_AUTO, diskless_valid, CTLFLAG_RD,
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&nfs_diskless_valid, 0, "");
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SYSCTL_STRING(_vfs_nfs4, OID_AUTO, diskless_rootpath, CTLFLAG_RD,
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nfsv3_diskless.root_hostnam, 0, "");
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SYSCTL_OPAQUE(_vfs_nfs4, OID_AUTO, diskless_rootaddr, CTLFLAG_RD,
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&nfsv3_diskless.root_saddr, sizeof nfsv3_diskless.root_saddr,
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"%Ssockaddr_in", "");
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SYSCTL_STRING(_vfs_nfs4, OID_AUTO, diskless_swappath, CTLFLAG_RD,
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nfsv3_diskless.swap_hostnam, 0, "");
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SYSCTL_OPAQUE(_vfs_nfs4, OID_AUTO, diskless_swapaddr, CTLFLAG_RD,
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&nfsv3_diskless.swap_saddr, sizeof nfsv3_diskless.swap_saddr,
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"%Ssockaddr_in","");
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static int nfs_mountdiskless(char *, char *, int,
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struct sockaddr_in *, struct nfs_args *,
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struct thread *, struct vnode **, struct mount **);
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static void nfs_convert_diskless(void);
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static void nfs_convert_oargs(struct nfs_args *args,
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struct onfs_args *oargs);
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static void
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nfs_convert_oargs(struct nfs_args *args, struct onfs_args *oargs)
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{
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args->version = NFS_ARGSVERSION;
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args->addr = oargs->addr;
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args->addrlen = oargs->addrlen;
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args->sotype = oargs->sotype;
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args->proto = oargs->proto;
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args->fh = oargs->fh;
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args->fhsize = oargs->fhsize;
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args->flags = oargs->flags;
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args->wsize = oargs->wsize;
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args->rsize = oargs->rsize;
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args->readdirsize = oargs->readdirsize;
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args->timeo = oargs->timeo;
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args->retrans = oargs->retrans;
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args->maxgrouplist = oargs->maxgrouplist;
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args->readahead = oargs->readahead;
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args->deadthresh = oargs->deadthresh;
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args->hostname = oargs->hostname;
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}
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static void
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nfs_convert_diskless(void)
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{
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bcopy(&nfs_diskless.myif, &nfsv3_diskless.myif,
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sizeof(struct ifaliasreq));
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bcopy(&nfs_diskless.mygateway, &nfsv3_diskless.mygateway,
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sizeof(struct sockaddr_in));
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nfs_convert_oargs(&nfsv3_diskless.root_args,&nfs_diskless.root_args);
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nfsv3_diskless.root_fhsize = NFSX_V2FH;
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bcopy(nfs_diskless.root_fh, nfsv3_diskless.root_fh, NFSX_V2FH);
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bcopy(&nfs_diskless.root_saddr,&nfsv3_diskless.root_saddr,
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sizeof(struct sockaddr_in));
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bcopy(nfs_diskless.root_hostnam, nfsv3_diskless.root_hostnam, MNAMELEN);
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nfsv3_diskless.root_time = nfs_diskless.root_time;
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bcopy(nfs_diskless.my_hostnam, nfsv3_diskless.my_hostnam,
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MAXHOSTNAMELEN);
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nfs_diskless_valid = 3;
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}
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#endif
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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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nfs_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);
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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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nfs_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.
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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_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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|
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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) {
|
|
if (argp->readahead <= NFS_MAXRAHEAD)
|
|
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) {
|
|
if (argp->deadthresh <= NFS_MAXDEADTHRESH)
|
|
nmp->nm_deadthresh = argp->deadthresh;
|
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else
|
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nmp->nm_deadthresh = NFS_MAXDEADTHRESH;
|
|
}
|
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|
|
adjsock |= ((nmp->nm_sotype != argp->sotype) ||
|
|
(nmp->nm_soproto != argp->proto));
|
|
nmp->nm_sotype = argp->sotype;
|
|
nmp->nm_soproto = argp->proto;
|
|
|
|
if (nmp->nm_rpcclnt.rc_so && adjsock) {
|
|
nfs_safedisconnect(nmp);
|
|
if (nmp->nm_sotype == SOCK_DGRAM) {
|
|
while (nfs4_connect(nmp)) {
|
|
printf("nfs_args: retrying connect\n");
|
|
(void) tsleep((caddr_t)&lbolt,
|
|
PSOCK, "nfscon", 0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* VFS Operations.
|
|
*
|
|
* mount system call
|
|
* It seems a bit dumb to copyinstr() the host and path here and then
|
|
* bcopy() them in mountnfs(), but I wanted to detect errors before
|
|
* doing the sockargs() call because sockargs() allocates an mbuf and
|
|
* an error after that means that I have to release the mbuf.
|
|
*/
|
|
/* ARGSUSED */
|
|
static int
|
|
nfs_mount(struct mount *mp, char *path, caddr_t data, struct nameidata *ndp,
|
|
struct thread *td)
|
|
{
|
|
int error;
|
|
struct nfs_args args;
|
|
struct sockaddr *nam;
|
|
struct vnode *vp;
|
|
char hst[MNAMELEN];
|
|
size_t len;
|
|
|
|
if (path == NULL) {
|
|
printf("NFSv4: nfs_mountroot not supported\n");
|
|
return EINVAL;
|
|
}
|
|
error = copyin(data, (caddr_t)&args, sizeof (struct nfs_args));
|
|
if (error)
|
|
return (error);
|
|
if (args.version != NFS_ARGSVERSION)
|
|
return (EPROGMISMATCH);
|
|
if (mp->mnt_flag & MNT_UPDATE) {
|
|
struct nfsmount *nmp = VFSTONFS(mp);
|
|
|
|
if (nmp == NULL)
|
|
return (EIO);
|
|
/*
|
|
* When doing an update, we can't change from or to
|
|
* v3, switch lockd strategies or change cookie translation
|
|
*/
|
|
args.flags = (args.flags &
|
|
~(NFSMNT_NFSV3 | NFSMNT_NFSV4 | NFSMNT_NOLOCKD)) |
|
|
(nmp->nm_flag &
|
|
(NFSMNT_NFSV3 | NFSMNT_NFSV4 | NFSMNT_NOLOCKD));
|
|
nfs_decode_args(nmp, &args);
|
|
return (0);
|
|
}
|
|
|
|
if (error)
|
|
return (error);
|
|
error = copyinstr(args.hostname, hst, MNAMELEN-1, &len);
|
|
if (error)
|
|
return (error);
|
|
bzero(&hst[len], MNAMELEN - len);
|
|
/* sockargs() call must be after above copyin() calls */
|
|
error = getsockaddr(&nam, (caddr_t)args.addr, args.addrlen);
|
|
if (error)
|
|
return (error);
|
|
error = mountnfs(&args, mp, nam, path, 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;
|
|
printf("nfsv4 renewd exiting\n");
|
|
kthread_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 *pth, 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 = (qaddr_t)nmp;
|
|
}
|
|
|
|
vfs_getnewfsid(mp);
|
|
nmp->nm_mountp = mp;
|
|
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;
|
|
bcopy(hst, mp->mnt_stat.f_mntfromname, MNAMELEN);
|
|
bcopy(pth, mp->mnt_stat.f_mntonname, MNAMELEN);
|
|
nmp->nm_nam = nam;
|
|
/* Set up the sockets and per-host congestion */
|
|
nmp->nm_sotype = argp->sotype;
|
|
nmp->nm_soproto = argp->proto;
|
|
/* XXX */
|
|
mp->mnt_stat.f_iosize = PAGE_SIZE;
|
|
|
|
/* XXX - this is to make some other code work. Sort of ugly. */
|
|
argp->flags |= (NFSMNT_NFSV3 | NFSMNT_NFSV4);
|
|
|
|
nfs_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)
|
|
kthread_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:
|
|
nfs_disconnect(nmp);
|
|
uma_zfree(nfsmount_zone, nmp);
|
|
FREE(nam, M_SONAME);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* unmount system call
|
|
*/
|
|
static int
|
|
nfs_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() 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);
|
|
if (error)
|
|
return (error);
|
|
|
|
/*
|
|
* We are now committed to the unmount.
|
|
*/
|
|
nfs_disconnect(nmp);
|
|
FREE(nmp->nm_nam, M_SONAME);
|
|
|
|
/* XXX there's a race condition here for SMP */
|
|
wakeup(&nfs4_daemonproc);
|
|
|
|
uma_zfree(nfsmount_zone, nmp);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Return root of a filesystem
|
|
*/
|
|
static int
|
|
nfs_root(struct mount *mp, struct vnode **vpp)
|
|
{
|
|
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);
|
|
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
|
|
*/
|
|
/* ARGSUSED */
|
|
static int
|
|
nfs_sync(struct mount *mp, int waitfor, struct ucred *cred, struct thread *td)
|
|
{
|
|
struct vnode *vp, *vnp;
|
|
int error, allerror = 0;
|
|
|
|
/*
|
|
* Force stale buffer cache information to be flushed.
|
|
*/
|
|
MNT_ILOCK(mp);
|
|
loop:
|
|
for (vp = TAILQ_FIRST(&mp->mnt_nvnodelist);
|
|
vp != NULL;
|
|
vp = vnp) {
|
|
/*
|
|
* If the vnode that we are about to sync is no longer
|
|
* associated with this mount point, start over.
|
|
*/
|
|
if (vp->v_mount != mp)
|
|
goto loop;
|
|
vnp = TAILQ_NEXT(vp, v_nmntvnodes);
|
|
VI_LOCK(vp);
|
|
MNT_IUNLOCK(mp);
|
|
if (VOP_ISLOCKED(vp, NULL) || TAILQ_EMPTY(&vp->v_dirtyblkhd) ||
|
|
waitfor == MNT_LAZY) {
|
|
VI_UNLOCK(vp);
|
|
MNT_ILOCK(mp);
|
|
continue;
|
|
}
|
|
if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td)) {
|
|
goto loop;
|
|
}
|
|
error = VOP_FSYNC(vp, cred, 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 int 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 & 0xffffff;
|
|
|
|
#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, seq++);
|
|
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);
|
|
}
|