743 lines
19 KiB
C
743 lines
19 KiB
C
/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. 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 8.3 (Berkeley) 1/4/94
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* $Id: nfs_vfsops.c,v 1.3 1994/08/20 16:03:19 davidg Exp $
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*/
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/ioctl.h>
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#include <sys/signal.h>
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#include <sys/proc.h>
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#include <sys/namei.h>
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#include <sys/vnode.h>
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#include <sys/kernel.h>
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#include <sys/mount.h>
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#include <sys/buf.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/systm.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 <nfs/rpcv2.h>
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#include <nfs/nfsv2.h>
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#include <nfs/nfsnode.h>
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#include <nfs/nfsmount.h>
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#include <nfs/nfs.h>
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#include <nfs/xdr_subs.h>
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#include <nfs/nfsm_subs.h>
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#include <nfs/nfsdiskless.h>
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#include <nfs/nqnfs.h>
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/*
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* nfs vfs operations.
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*/
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struct vfsops nfs_vfsops = {
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nfs_mount,
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nfs_start,
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nfs_unmount,
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nfs_root,
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nfs_quotactl,
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nfs_statfs,
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nfs_sync,
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nfs_vget,
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nfs_fhtovp,
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nfs_vptofh,
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nfs_init,
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};
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VFS_SET(nfs_vfsops, nfs, MOUNT_NFS, 0);
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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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extern u_long nfs_procids[NFS_NPROCS];
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extern u_long nfs_prog, nfs_vers;
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void nfs_disconnect __P((struct nfsmount *));
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void nfsargs_ntoh __P((struct nfs_args *));
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static struct mount *nfs_mountdiskless __P((char *, char *, int,
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struct sockaddr_in *, struct nfs_args *, register struct vnode **));
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#define TRUE 1
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#define FALSE 0
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/*
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* nfs statfs call
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*/
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int
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nfs_statfs(mp, sbp, p)
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struct mount *mp;
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register struct statfs *sbp;
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struct proc *p;
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{
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register struct vnode *vp;
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register struct nfsv2_statfs *sfp;
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register caddr_t cp;
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register long t1;
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caddr_t bpos, dpos, cp2;
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int error = 0, isnq;
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struct mbuf *mreq, *mrep, *md, *mb, *mb2;
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struct nfsmount *nmp;
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struct ucred *cred;
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struct nfsnode *np;
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nmp = VFSTONFS(mp);
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isnq = (nmp->nm_flag & NFSMNT_NQNFS);
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if (error = nfs_nget(mp, &nmp->nm_fh, &np))
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return (error);
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vp = NFSTOV(np);
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nfsstats.rpccnt[NFSPROC_STATFS]++;
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cred = crget();
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cred->cr_ngroups = 1;
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nfsm_reqhead(vp, NFSPROC_STATFS, NFSX_FH);
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nfsm_fhtom(vp);
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nfsm_request(vp, NFSPROC_STATFS, p, cred);
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nfsm_dissect(sfp, struct nfsv2_statfs *, NFSX_STATFS(isnq));
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sbp->f_type = MOUNT_NFS;
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sbp->f_flags = nmp->nm_flag;
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sbp->f_iosize = NFS_MAXDGRAMDATA;
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sbp->f_bsize = fxdr_unsigned(long, sfp->sf_bsize);
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sbp->f_blocks = fxdr_unsigned(long, sfp->sf_blocks);
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sbp->f_bfree = fxdr_unsigned(long, sfp->sf_bfree);
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sbp->f_bavail = fxdr_unsigned(long, sfp->sf_bavail);
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if (isnq) {
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sbp->f_files = fxdr_unsigned(long, sfp->sf_files);
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sbp->f_ffree = fxdr_unsigned(long, sfp->sf_ffree);
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} else {
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sbp->f_files = 0;
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sbp->f_ffree = 0;
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}
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if (sbp != &mp->mnt_stat) {
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bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
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bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
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}
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nfsm_reqdone;
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vrele(vp);
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crfree(cred);
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return (error);
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}
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/*
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* Mount a remote root fs via. nfs. This depends on the info in the
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* nfs_diskless structure that has been filled in properly by some primary
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* bootstrap.
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* It goes something like this:
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* - do enough of "ifconfig" by calling ifioctl() so that the system
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* can talk to the server
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* - If nfs_diskless.mygateway is filled in, use that address as
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* a default gateway.
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* - hand craft the swap nfs vnode hanging off a fake mount point
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* if swdevt[0].sw_dev == NODEV
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* - build the rootfs mount point and call mountnfs() to do the rest.
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*/
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int
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nfs_mountroot()
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{
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register struct mount *mp;
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register struct nfs_diskless *nd = &nfs_diskless;
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struct socket *so;
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struct vnode *vp;
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struct proc *p = curproc; /* XXX */
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int error, i;
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/*
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* XXX time must be non-zero when we init the interface or else
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* the arp code will wedge...
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*/
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if (time.tv_sec == 0)
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time.tv_sec = 1;
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#ifdef notyet
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/* Set up swap credentials. */
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proc0.p_ucred->cr_uid = ntohl(nd->swap_ucred.cr_uid);
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proc0.p_ucred->cr_gid = ntohl(nd->swap_ucred.cr_gid);
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if ((proc0.p_ucred->cr_ngroups = ntohs(nd->swap_ucred.cr_ngroups)) >
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NGROUPS)
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proc0.p_ucred->cr_ngroups = NGROUPS;
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for (i = 0; i < proc0.p_ucred->cr_ngroups; i++)
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proc0.p_ucred->cr_groups[i] = ntohl(nd->swap_ucred.cr_groups[i]);
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#endif
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/*
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* Do enough of ifconfig(8) so that the critical net interface can
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* talk to the server.
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*/
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if (error = socreate(nd->myif.ifra_addr.sa_family, &so, SOCK_DGRAM, 0))
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panic("nfs_mountroot: socreate: %d", error);
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if (error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, p))
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panic("nfs_mountroot: SIOCAIFADDR: %d", error);
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soclose(so);
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/*
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* If the gateway field is filled in, set it as the default route.
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*/
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if (nd->mygateway.sin_len != 0) {
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struct sockaddr_in mask, sin;
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bzero((caddr_t)&mask, sizeof(mask));
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sin = mask;
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sin.sin_family = AF_INET;
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sin.sin_len = sizeof(sin);
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if (error = rtrequest(RTM_ADD, (struct sockaddr *)&sin,
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(struct sockaddr *)&nd->mygateway,
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(struct sockaddr *)&mask,
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RTF_UP | RTF_GATEWAY, (struct rtentry **)0))
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panic("nfs_mountroot: RTM_ADD: %d", error);
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}
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/*
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* If swapping to an nfs node (indicated by swdevt[0].sw_dev == NODEV):
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* Create a fake mount point just for the swap vnode so that the
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* swap file can be on a different server from the rootfs.
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*/
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if (swdevt[0].sw_dev == NODEV) {
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nd->swap_args.fh = (nfsv2fh_t *)nd->swap_fh;
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(void) nfs_mountdiskless(nd->swap_hostnam, "/swap", 0,
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&nd->swap_saddr, &nd->swap_args, &vp);
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/*
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* Since the swap file is not the root dir of a file system,
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* hack it to a regular file.
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*/
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vp->v_type = VREG;
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vp->v_flag = 0;
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swapdev_vp = vp;
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VREF(vp);
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swdevt[0].sw_vp = vp;
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swdevt[0].sw_nblks = ntohl(nd->swap_nblks);
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} else if (bdevvp(swapdev, &swapdev_vp))
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panic("nfs_mountroot: can't setup swapdev_vp");
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/*
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* Create the rootfs mount point.
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*/
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nd->root_args.fh = (nfsv2fh_t *)nd->root_fh;
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mp = nfs_mountdiskless(nd->root_hostnam, "/", MNT_RDONLY,
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&nd->root_saddr, &nd->root_args, &vp);
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if (vfs_lock(mp))
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panic("nfs_mountroot: vfs_lock");
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TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list);
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mp->mnt_flag |= MNT_ROOTFS;
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mp->mnt_vnodecovered = NULLVP;
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vfs_unlock(mp);
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rootvp = vp;
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/*
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* This is not really an nfs issue, but it is much easier to
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* set hostname here and then let the "/etc/rc.xxx" files
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* mount the right /var based upon its preset value.
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*/
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bcopy(nd->my_hostnam, hostname, MAXHOSTNAMELEN);
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hostname[MAXHOSTNAMELEN - 1] = '\0';
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for (i = 0; i < MAXHOSTNAMELEN; i++)
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if (hostname[i] == '\0')
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break;
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hostnamelen = i;
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inittodr(ntohl(nd->root_time));
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return (0);
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}
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/*
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* Internal version of mount system call for diskless setup.
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*/
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static struct mount *
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nfs_mountdiskless(path, which, mountflag, sin, args, vpp)
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char *path;
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char *which;
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int mountflag;
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struct sockaddr_in *sin;
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struct nfs_args *args;
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register struct vnode **vpp;
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{
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register struct mount *mp;
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register struct mbuf *m;
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register int error;
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mp = (struct mount *)malloc((u_long)sizeof(struct mount),
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M_MOUNT, M_NOWAIT);
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if (mp == NULL)
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panic("nfs_mountroot: %s mount malloc", which);
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bzero((char *)mp, (u_long)sizeof(struct mount));
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mp->mnt_op = &nfs_vfsops;
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mp->mnt_flag = mountflag;
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MGET(m, MT_SONAME, M_DONTWAIT);
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if (m == NULL)
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panic("nfs_mountroot: %s mount mbuf", which);
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bcopy((caddr_t)sin, mtod(m, caddr_t), sin->sin_len);
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m->m_len = sin->sin_len;
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nfsargs_ntoh(args);
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if (error = mountnfs(args, mp, m, which, path, vpp))
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panic("nfs_mountroot: mount %s on %s: %d", path, which, error);
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return (mp);
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}
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/*
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* Convert the integer fields of the nfs_args structure from net byte order
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* to host byte order. Called by nfs_mountroot() above.
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*/
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void
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nfsargs_ntoh(nfsp)
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register struct nfs_args *nfsp;
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{
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NTOHL(nfsp->sotype);
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NTOHL(nfsp->proto);
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NTOHL(nfsp->flags);
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NTOHL(nfsp->wsize);
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NTOHL(nfsp->rsize);
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NTOHL(nfsp->timeo);
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NTOHL(nfsp->retrans);
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NTOHL(nfsp->maxgrouplist);
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NTOHL(nfsp->readahead);
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NTOHL(nfsp->leaseterm);
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NTOHL(nfsp->deadthresh);
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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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int
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nfs_mount(mp, path, data, ndp, p)
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struct mount *mp;
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char *path;
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caddr_t data;
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struct nameidata *ndp;
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struct proc *p;
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{
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int error;
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struct nfs_args args;
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struct mbuf *nam;
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struct vnode *vp;
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char pth[MNAMELEN], hst[MNAMELEN];
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u_int len;
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nfsv2fh_t nfh;
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if (error = copyin(data, (caddr_t)&args, sizeof (struct nfs_args)))
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return (error);
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if (error = copyin((caddr_t)args.fh, (caddr_t)&nfh, sizeof (nfsv2fh_t)))
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return (error);
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if (error = copyinstr(path, pth, MNAMELEN-1, &len))
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return (error);
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bzero(&pth[len], MNAMELEN - len);
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if (error = copyinstr(args.hostname, hst, MNAMELEN-1, &len))
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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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if (error = sockargs(&nam, (caddr_t)args.addr,
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args.addrlen, MT_SONAME))
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return (error);
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args.fh = &nfh;
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error = mountnfs(&args, mp, nam, pth, hst, &vp);
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return (error);
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}
|
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|
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/*
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* Common code for mount and mountroot
|
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*/
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int
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mountnfs(argp, mp, nam, pth, hst, vpp)
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register struct nfs_args *argp;
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register struct mount *mp;
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struct mbuf *nam;
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char *pth, *hst;
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struct vnode **vpp;
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{
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register struct nfsmount *nmp;
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struct nfsnode *np;
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int error;
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|
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if (mp->mnt_flag & MNT_UPDATE) {
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nmp = VFSTONFS(mp);
|
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/* update paths, file handles, etc, here XXX */
|
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m_freem(nam);
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return (0);
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} else {
|
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MALLOC(nmp, struct nfsmount *, sizeof (struct nfsmount),
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M_NFSMNT, M_WAITOK);
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bzero((caddr_t)nmp, sizeof (struct nfsmount));
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mp->mnt_data = (qaddr_t)nmp;
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}
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getnewfsid(mp, MOUNT_NFS);
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nmp->nm_mountp = mp;
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nmp->nm_flag = argp->flags;
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if ((nmp->nm_flag & (NFSMNT_NQNFS | NFSMNT_MYWRITE)) ==
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(NFSMNT_NQNFS | NFSMNT_MYWRITE)) {
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error = EPERM;
|
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goto bad;
|
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}
|
|
if (nmp->nm_flag & NFSMNT_NQNFS)
|
|
/*
|
|
* We have to set mnt_maxsymlink to a non-zero value so
|
|
* that COMPAT_43 routines will know that we are setting
|
|
* the d_type field in directories (and can zero it for
|
|
* unsuspecting binaries).
|
|
*/
|
|
mp->mnt_maxsymlinklen = 1;
|
|
nmp->nm_timeo = NFS_TIMEO;
|
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nmp->nm_retry = NFS_RETRANS;
|
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nmp->nm_wsize = NFS_WSIZE;
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|
nmp->nm_rsize = NFS_RSIZE;
|
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nmp->nm_numgrps = NFS_MAXGRPS;
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nmp->nm_readahead = NFS_DEFRAHEAD;
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nmp->nm_leaseterm = NQ_DEFLEASE;
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nmp->nm_deadthresh = NQ_DEADTHRESH;
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nmp->nm_tnext = (struct nfsnode *)nmp;
|
|
nmp->nm_tprev = (struct nfsnode *)nmp;
|
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nmp->nm_inprog = NULLVP;
|
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bcopy((caddr_t)argp->fh, (caddr_t)&nmp->nm_fh, sizeof(nfsv2fh_t));
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|
mp->mnt_stat.f_type = MOUNT_NFS;
|
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bcopy(hst, mp->mnt_stat.f_mntfromname, MNAMELEN);
|
|
bcopy(pth, mp->mnt_stat.f_mntonname, MNAMELEN);
|
|
nmp->nm_nam = nam;
|
|
|
|
if ((argp->flags & NFSMNT_TIMEO) && argp->timeo > 0) {
|
|
nmp->nm_timeo = (argp->timeo * NFS_HZ + 5) / 10;
|
|
if (nmp->nm_timeo < NFS_MINTIMEO)
|
|
nmp->nm_timeo = NFS_MINTIMEO;
|
|
else if (nmp->nm_timeo > NFS_MAXTIMEO)
|
|
nmp->nm_timeo = NFS_MAXTIMEO;
|
|
}
|
|
|
|
if ((argp->flags & NFSMNT_RETRANS) && argp->retrans > 1) {
|
|
nmp->nm_retry = argp->retrans;
|
|
if (nmp->nm_retry > NFS_MAXREXMIT)
|
|
nmp->nm_retry = NFS_MAXREXMIT;
|
|
}
|
|
|
|
if ((argp->flags & NFSMNT_WSIZE) && argp->wsize > 0) {
|
|
nmp->nm_wsize = argp->wsize;
|
|
/* Round down to multiple of blocksize */
|
|
nmp->nm_wsize &= ~0x1ff;
|
|
if (nmp->nm_wsize <= 0)
|
|
nmp->nm_wsize = 512;
|
|
else if (nmp->nm_wsize > NFS_MAXDATA)
|
|
nmp->nm_wsize = NFS_MAXDATA;
|
|
}
|
|
if (nmp->nm_wsize > MAXBSIZE)
|
|
nmp->nm_wsize = MAXBSIZE;
|
|
|
|
if ((argp->flags & NFSMNT_RSIZE) && argp->rsize > 0) {
|
|
nmp->nm_rsize = argp->rsize;
|
|
/* Round down to multiple of blocksize */
|
|
nmp->nm_rsize &= ~0x1ff;
|
|
if (nmp->nm_rsize <= 0)
|
|
nmp->nm_rsize = 512;
|
|
else if (nmp->nm_rsize > NFS_MAXDATA)
|
|
nmp->nm_rsize = NFS_MAXDATA;
|
|
}
|
|
if (nmp->nm_rsize > MAXBSIZE)
|
|
nmp->nm_rsize = MAXBSIZE;
|
|
if ((argp->flags & NFSMNT_MAXGRPS) && argp->maxgrouplist >= 0 &&
|
|
argp->maxgrouplist <= NFS_MAXGRPS)
|
|
nmp->nm_numgrps = argp->maxgrouplist;
|
|
if ((argp->flags & NFSMNT_READAHEAD) && argp->readahead >= 0 &&
|
|
argp->readahead <= NFS_MAXRAHEAD)
|
|
nmp->nm_readahead = argp->readahead;
|
|
if ((argp->flags & NFSMNT_LEASETERM) && argp->leaseterm >= 2 &&
|
|
argp->leaseterm <= NQ_MAXLEASE)
|
|
nmp->nm_leaseterm = argp->leaseterm;
|
|
if ((argp->flags & NFSMNT_DEADTHRESH) && argp->deadthresh >= 1 &&
|
|
argp->deadthresh <= NQ_NEVERDEAD)
|
|
nmp->nm_deadthresh = argp->deadthresh;
|
|
/* Set up the sockets and per-host congestion */
|
|
nmp->nm_sotype = argp->sotype;
|
|
nmp->nm_soproto = argp->proto;
|
|
|
|
/*
|
|
* For Connection based sockets (TCP,...) defer the connect until
|
|
* the first request, in case the server is not responding.
|
|
*/
|
|
if (nmp->nm_sotype == SOCK_DGRAM &&
|
|
(error = nfs_connect(nmp, (struct nfsreq *)0)))
|
|
goto bad;
|
|
|
|
/*
|
|
* This is silly, but it has to be set so that vinifod() works.
|
|
* We do not want to do an nfs_statfs() here since we can get
|
|
* stuck on a dead server and we are holding a lock on the mount
|
|
* point.
|
|
*/
|
|
mp->mnt_stat.f_iosize = NFS_MAXDGRAMDATA;
|
|
/*
|
|
* A reference count is needed on the nfsnode representing the
|
|
* remote root. If this object is not persistent, then backward
|
|
* traversals of the mount point (i.e. "..") will not work if
|
|
* the nfsnode gets flushed out of the cache. Ufs does not have
|
|
* this problem, because one can identify root inodes by their
|
|
* number == ROOTINO (2).
|
|
*/
|
|
if (error = nfs_nget(mp, &nmp->nm_fh, &np))
|
|
goto bad;
|
|
*vpp = NFSTOV(np);
|
|
|
|
return (0);
|
|
bad:
|
|
nfs_disconnect(nmp);
|
|
free((caddr_t)nmp, M_NFSMNT);
|
|
m_freem(nam);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* unmount system call
|
|
*/
|
|
int
|
|
nfs_unmount(mp, mntflags, p)
|
|
struct mount *mp;
|
|
int mntflags;
|
|
struct proc *p;
|
|
{
|
|
register struct nfsmount *nmp;
|
|
struct nfsnode *np;
|
|
struct vnode *vp;
|
|
int error, flags = 0;
|
|
extern int doforce;
|
|
|
|
if (mntflags & MNT_FORCE) {
|
|
if (!doforce)
|
|
return (EINVAL);
|
|
flags |= FORCECLOSE;
|
|
}
|
|
nmp = VFSTONFS(mp);
|
|
/*
|
|
* Goes something like this..
|
|
* - Check for activity on the root vnode (other than ourselves).
|
|
* - Call vflush() to clear out vnodes for this file system,
|
|
* except for the root vnode.
|
|
* - Decrement reference on the vnode representing remote root.
|
|
* - Close the socket
|
|
* - Free up the data structures
|
|
*/
|
|
/*
|
|
* We need to decrement the ref. count on the nfsnode representing
|
|
* the remote root. See comment in mountnfs(). The VFS unmount()
|
|
* has done vput on this vnode, otherwise we would get deadlock!
|
|
*/
|
|
if (error = nfs_nget(mp, &nmp->nm_fh, &np))
|
|
return(error);
|
|
vp = NFSTOV(np);
|
|
if (vp->v_usecount > 2) {
|
|
vput(vp);
|
|
return (EBUSY);
|
|
}
|
|
|
|
/*
|
|
* Must handshake with nqnfs_clientd() if it is active.
|
|
*/
|
|
nmp->nm_flag |= NFSMNT_DISMINPROG;
|
|
while (nmp->nm_inprog != NULLVP)
|
|
(void) tsleep((caddr_t)&lbolt, PSOCK, "nfsdism", 0);
|
|
if (error = vflush(mp, vp, flags)) {
|
|
vput(vp);
|
|
nmp->nm_flag &= ~NFSMNT_DISMINPROG;
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* We are now committed to the unmount.
|
|
* For NQNFS, let the server daemon free the nfsmount structure.
|
|
*/
|
|
if (nmp->nm_flag & (NFSMNT_NQNFS | NFSMNT_KERB))
|
|
nmp->nm_flag |= NFSMNT_DISMNT;
|
|
|
|
/*
|
|
* There are two reference counts to get rid of here.
|
|
*/
|
|
vrele(vp);
|
|
vrele(vp);
|
|
vgone(vp);
|
|
nfs_disconnect(nmp);
|
|
m_freem(nmp->nm_nam);
|
|
|
|
if ((nmp->nm_flag & (NFSMNT_NQNFS | NFSMNT_KERB)) == 0)
|
|
free((caddr_t)nmp, M_NFSMNT);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Return root of a filesystem
|
|
*/
|
|
int
|
|
nfs_root(mp, vpp)
|
|
struct mount *mp;
|
|
struct vnode **vpp;
|
|
{
|
|
register struct vnode *vp;
|
|
struct nfsmount *nmp;
|
|
struct nfsnode *np;
|
|
int error;
|
|
|
|
nmp = VFSTONFS(mp);
|
|
if (error = nfs_nget(mp, &nmp->nm_fh, &np))
|
|
return (error);
|
|
vp = NFSTOV(np);
|
|
vp->v_type = VDIR;
|
|
vp->v_flag = VROOT;
|
|
*vpp = vp;
|
|
return (0);
|
|
}
|
|
|
|
extern int syncprt;
|
|
|
|
/*
|
|
* Flush out the buffer cache
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
nfs_sync(mp, waitfor, cred, p)
|
|
struct mount *mp;
|
|
int waitfor;
|
|
struct ucred *cred;
|
|
struct proc *p;
|
|
{
|
|
register struct vnode *vp;
|
|
int error, allerror = 0;
|
|
|
|
/*
|
|
* Force stale buffer cache information to be flushed.
|
|
*/
|
|
loop:
|
|
for (vp = mp->mnt_vnodelist.lh_first;
|
|
vp != NULL;
|
|
vp = vp->v_mntvnodes.le_next) {
|
|
/*
|
|
* 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;
|
|
if (VOP_ISLOCKED(vp) || vp->v_dirtyblkhd.lh_first == NULL)
|
|
continue;
|
|
if (vget(vp, 1))
|
|
goto loop;
|
|
if (error = VOP_FSYNC(vp, cred, waitfor, p))
|
|
allerror = error;
|
|
vput(vp);
|
|
}
|
|
return (allerror);
|
|
}
|
|
|
|
/*
|
|
* NFS flat namespace lookup.
|
|
* Currently unsupported.
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
nfs_vget(mp, ino, vpp)
|
|
struct mount *mp;
|
|
ino_t ino;
|
|
struct vnode **vpp;
|
|
{
|
|
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
/*
|
|
* At this point, this should never happen
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
nfs_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp)
|
|
register struct mount *mp;
|
|
struct fid *fhp;
|
|
struct mbuf *nam;
|
|
struct vnode **vpp;
|
|
int *exflagsp;
|
|
struct ucred **credanonp;
|
|
{
|
|
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* Vnode pointer to File handle, should never happen either
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
nfs_vptofh(vp, fhp)
|
|
struct vnode *vp;
|
|
struct fid *fhp;
|
|
{
|
|
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* Vfs start routine, a no-op.
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
nfs_start(mp, flags, p)
|
|
struct mount *mp;
|
|
int flags;
|
|
struct proc *p;
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Do operations associated with quotas, not supported
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
nfs_quotactl(mp, cmd, uid, arg, p)
|
|
struct mount *mp;
|
|
int cmd;
|
|
uid_t uid;
|
|
caddr_t arg;
|
|
struct proc *p;
|
|
{
|
|
|
|
return (EOPNOTSUPP);
|
|
}
|