/*
- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Macklem at The University of Guelph.
*
- * Redistribution is only permitted until one year after the first shipment
- * of 4.4BSD by the Regents. Otherwise, redistribution and use in source and
- * binary forms are permitted provided that: (1) source distributions retain
- * this entire copyright notice and comment, and (2) distributions including
- * binaries display the following acknowledgement: This product includes
- * software developed by the University of California, Berkeley and its
- * contributors'' in the documentation or other materials provided with the
- * distribution and in all advertising materials mentioning features or use
- * of this software. Neither the name of the University nor the names of
- * its contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
*
- * @(#)nfs_vfsops.c 7.24 (Berkeley) 6/28/90
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)nfs_vfsops.c 8.1 (Berkeley) 6/10/93
*/
-#include "param.h"
-#include "signal.h"
-#include "user.h"
-#include "proc.h"
-#include "vnode.h"
-#include "mount.h"
-#include "errno.h"
-#include "buf.h"
-#include "mbuf.h"
-#include "socket.h"
-#include "systm.h"
-#include "nfsv2.h"
-#include "nfsnode.h"
-#include "nfsmount.h"
-#include "nfs.h"
-#include "xdr_subs.h"
-#include "nfsm_subs.h"
+#include <sys/param.h>
+#include <sys/conf.h>
+#include <sys/ioctl.h>
+#include <sys/signal.h>
+#include <sys/proc.h>
+#include <sys/namei.h>
+#include <sys/vnode.h>
+#include <sys/kernel.h>
+#include <sys/mount.h>
+#include <sys/buf.h>
+#include <sys/mbuf.h>
+#include <sys/socket.h>
+#include <sys/systm.h>
+
+#include <net/if.h>
+#include <net/route.h>
+#include <netinet/in.h>
+
+#include <nfs/rpcv2.h>
+#include <nfs/nfsv2.h>
+#include <nfs/nfsnode.h>
+#include <nfs/nfsmount.h>
+#include <nfs/nfs.h>
+#include <nfs/xdr_subs.h>
+#include <nfs/nfsm_subs.h>
+#include <nfs/nfsdiskless.h>
+#include <nfs/nqnfs.h>
/*
* nfs vfs operations.
*/
-int nfs_mount();
-int nfs_start();
-int nfs_unmount();
-int nfs_root();
-int nfs_quotactl();
-int nfs_statfs();
-int nfs_sync();
-int nfs_fhtovp();
-int nfs_vptofh();
-int nfs_init();
-
struct vfsops nfs_vfsops = {
nfs_mount,
nfs_start,
nfs_quotactl,
nfs_statfs,
nfs_sync,
+ nfs_vget,
nfs_fhtovp,
nfs_vptofh,
nfs_init,
};
+/*
+ * This structure must be filled in by a primary bootstrap or bootstrap
+ * server for a diskless/dataless machine. It is initialized below just
+ * to ensure that it is allocated to initialized data (.data not .bss).
+ */
+struct nfs_diskless nfs_diskless = { 0 };
+
static u_char nfs_mntid;
extern u_long nfs_procids[NFS_NPROCS];
extern u_long nfs_prog, nfs_vers;
-void nfs_disconnect();
+void nfs_disconnect __P((struct nfsmount *));
+void nfsargs_ntoh __P((struct nfs_args *));
+static struct mount *nfs_mountdiskless __P((char *, char *, int,
+ struct sockaddr_in *, struct nfs_args *, register struct vnode **));
#define TRUE 1
#define FALSE 0
/*
* nfs statfs call
*/
-nfs_statfs(mp, sbp)
+int
+nfs_statfs(mp, sbp, p)
struct mount *mp;
register struct statfs *sbp;
+ struct proc *p;
{
register struct vnode *vp;
register struct nfsv2_statfs *sfp;
register caddr_t cp;
register long t1;
caddr_t bpos, dpos, cp2;
- u_long xid;
- int error = 0;
+ int error = 0, isnq;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
struct nfsmount *nmp;
struct ucred *cred;
struct nfsnode *np;
nmp = VFSTONFS(mp);
+ isnq = (nmp->nm_flag & NFSMNT_NQNFS);
if (error = nfs_nget(mp, &nmp->nm_fh, &np))
return (error);
vp = NFSTOV(np);
nfsstats.rpccnt[NFSPROC_STATFS]++;
cred = crget();
cred->cr_ngroups = 1;
- nfsm_reqhead(nfs_procids[NFSPROC_STATFS], cred, NFSX_FH);
+ nfsm_reqhead(vp, NFSPROC_STATFS, NFSX_FH);
nfsm_fhtom(vp);
- nfsm_request(vp, NFSPROC_STATFS, u.u_procp, 0);
- nfsm_disect(sfp, struct nfsv2_statfs *, NFSX_STATFS);
+ nfsm_request(vp, NFSPROC_STATFS, p, cred);
+ nfsm_dissect(sfp, struct nfsv2_statfs *, NFSX_STATFS(isnq));
sbp->f_type = MOUNT_NFS;
sbp->f_flags = nmp->nm_flag;
- sbp->f_bsize = fxdr_unsigned(long, sfp->sf_tsize);
- sbp->f_fsize = fxdr_unsigned(long, sfp->sf_bsize);
+ sbp->f_iosize = NFS_MAXDGRAMDATA;
+ sbp->f_bsize = fxdr_unsigned(long, sfp->sf_bsize);
sbp->f_blocks = fxdr_unsigned(long, sfp->sf_blocks);
sbp->f_bfree = fxdr_unsigned(long, sfp->sf_bfree);
sbp->f_bavail = fxdr_unsigned(long, sfp->sf_bavail);
- sbp->f_files = 0;
- sbp->f_ffree = 0;
+ if (isnq) {
+ sbp->f_files = fxdr_unsigned(long, sfp->sf_files);
+ sbp->f_ffree = fxdr_unsigned(long, sfp->sf_ffree);
+ } else {
+ sbp->f_files = 0;
+ sbp->f_ffree = 0;
+ }
if (sbp != &mp->mnt_stat) {
bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
}
nfsm_reqdone;
- nfs_nput(vp);
+ vrele(vp);
crfree(cred);
return (error);
}
/*
- * Called by vfs_mountroot when nfs is going to be mounted as root
- * Not Yet (By a LONG shot)
+ * Mount a remote root fs via. nfs. This depends on the info in the
+ * nfs_diskless structure that has been filled in properly by some primary
+ * bootstrap.
+ * It goes something like this:
+ * - do enough of "ifconfig" by calling ifioctl() so that the system
+ * can talk to the server
+ * - If nfs_diskless.mygateway is filled in, use that address as
+ * a default gateway.
+ * - hand craft the swap nfs vnode hanging off a fake mount point
+ * if swdevt[0].sw_dev == NODEV
+ * - build the rootfs mount point and call mountnfs() to do the rest.
*/
+int
nfs_mountroot()
{
- return (ENODEV);
+ register struct mount *mp;
+ register struct nfs_diskless *nd = &nfs_diskless;
+ struct socket *so;
+ struct vnode *vp;
+ struct proc *p = curproc; /* XXX */
+ int error, i, s;
+
+ /*
+ * XXX time must be non-zero when we init the interface or else
+ * the arp code will wedge...
+ */
+ if (time.tv_sec == 0)
+ time.tv_sec = 1;
+
+#ifdef notyet
+ /* Set up swap credentials. */
+ proc0.p_ucred->cr_uid = ntohl(nd->swap_ucred.cr_uid);
+ proc0.p_ucred->cr_gid = ntohl(nd->swap_ucred.cr_gid);
+ if ((proc0.p_ucred->cr_ngroups = ntohs(nd->swap_ucred.cr_ngroups)) >
+ NGROUPS)
+ proc0.p_ucred->cr_ngroups = NGROUPS;
+ for (i = 0; i < proc0.p_ucred->cr_ngroups; i++)
+ proc0.p_ucred->cr_groups[i] = ntohl(nd->swap_ucred.cr_groups[i]);
+#endif
+
+ /*
+ * Do enough of ifconfig(8) so that the critical net interface can
+ * talk to the server.
+ */
+ if (error = socreate(nd->myif.ifra_addr.sa_family, &so, SOCK_DGRAM, 0))
+ panic("nfs_mountroot: socreate: %d", error);
+ if (error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, p))
+ panic("nfs_mountroot: SIOCAIFADDR: %d", error);
+ soclose(so);
+
+ /*
+ * If the gateway field is filled in, set it as the default route.
+ */
+ if (nd->mygateway.sin_len != 0) {
+ struct sockaddr_in mask, sin;
+
+ bzero((caddr_t)&mask, sizeof(mask));
+ sin = mask;
+ sin.sin_family = AF_INET;
+ sin.sin_len = sizeof(sin);
+ if (error = rtrequest(RTM_ADD, (struct sockaddr *)&sin,
+ (struct sockaddr *)&nd->mygateway,
+ (struct sockaddr *)&mask,
+ RTF_UP | RTF_GATEWAY, (struct rtentry **)0))
+ panic("nfs_mountroot: RTM_ADD: %d", error);
+ }
+
+ /*
+ * If swapping to an nfs node (indicated by swdevt[0].sw_dev == NODEV):
+ * Create a fake mount point just for the swap vnode so that the
+ * swap file can be on a different server from the rootfs.
+ */
+ if (swdevt[0].sw_dev == NODEV) {
+ nd->swap_args.fh = (nfsv2fh_t *)nd->swap_fh;
+ (void) nfs_mountdiskless(nd->swap_hostnam, "/swap", 0,
+ &nd->swap_saddr, &nd->swap_args, &vp);
+
+ /*
+ * Since the swap file is not the root dir of a file system,
+ * hack it to a regular file.
+ */
+ vp->v_type = VREG;
+ vp->v_flag = 0;
+ swapdev_vp = vp;
+ VREF(vp);
+ swdevt[0].sw_vp = vp;
+ swdevt[0].sw_nblks = ntohl(nd->swap_nblks);
+ } else if (bdevvp(swapdev, &swapdev_vp))
+ panic("nfs_mountroot: can't setup swapdev_vp");
+
+ /*
+ * Create the rootfs mount point.
+ */
+ nd->root_args.fh = (nfsv2fh_t *)nd->root_fh;
+ mp = nfs_mountdiskless(nd->root_hostnam, "/", MNT_RDONLY,
+ &nd->root_saddr, &nd->root_args, &vp);
+
+ if (vfs_lock(mp))
+ panic("nfs_mountroot: vfs_lock");
+ rootfs = mp;
+ mp->mnt_next = mp;
+ mp->mnt_prev = mp;
+ mp->mnt_vnodecovered = NULLVP;
+ vfs_unlock(mp);
+ rootvp = vp;
+
+ /*
+ * This is not really an nfs issue, but it is much easier to
+ * set hostname here and then let the "/etc/rc.xxx" files
+ * mount the right /var based upon its preset value.
+ */
+ bcopy(nd->my_hostnam, hostname, MAXHOSTNAMELEN);
+ hostname[MAXHOSTNAMELEN - 1] = '\0';
+ for (i = 0; i < MAXHOSTNAMELEN; i++)
+ if (hostname[i] == '\0')
+ break;
+ hostnamelen = i;
+ inittodr(ntohl(nd->root_time));
+ return (0);
+}
+
+/*
+ * Internal version of mount system call for diskless setup.
+ */
+static struct mount *
+nfs_mountdiskless(path, which, mountflag, sin, args, vpp)
+ char *path;
+ char *which;
+ int mountflag;
+ struct sockaddr_in *sin;
+ struct nfs_args *args;
+ register struct vnode **vpp;
+{
+ register struct mount *mp;
+ register struct mbuf *m;
+ register int error;
+
+ mp = (struct mount *)malloc((u_long)sizeof(struct mount),
+ M_MOUNT, M_NOWAIT);
+ if (mp == NULL)
+ panic("nfs_mountroot: %s mount malloc", which);
+ mp->mnt_op = &nfs_vfsops;
+ mp->mnt_flag = mountflag;
+ mp->mnt_mounth = NULLVP;
+
+ MGET(m, MT_SONAME, M_DONTWAIT);
+ if (m == NULL)
+ panic("nfs_mountroot: %s mount mbuf", which);
+ bcopy((caddr_t)sin, mtod(m, caddr_t), sin->sin_len);
+ m->m_len = sin->sin_len;
+ nfsargs_ntoh(args);
+ if (error = mountnfs(args, mp, m, which, path, vpp))
+ panic("nfs_mountroot: mount %s on %s: %d", path, which, error);
+
+ return (mp);
+}
+
+/*
+ * Convert the integer fields of the nfs_args structure from net byte order
+ * to host byte order. Called by nfs_mountroot() above.
+ */
+void
+nfsargs_ntoh(nfsp)
+ register struct nfs_args *nfsp;
+{
+
+ NTOHL(nfsp->sotype);
+ NTOHL(nfsp->proto);
+ NTOHL(nfsp->flags);
+ NTOHL(nfsp->wsize);
+ NTOHL(nfsp->rsize);
+ NTOHL(nfsp->timeo);
+ NTOHL(nfsp->retrans);
+ NTOHL(nfsp->maxgrouplist);
+ NTOHL(nfsp->readahead);
+ NTOHL(nfsp->leaseterm);
+ NTOHL(nfsp->deadthresh);
}
/*
* an error after that means that I have to release the mbuf.
*/
/* ARGSUSED */
-nfs_mount(mp, path, data, ndp)
+int
+nfs_mount(mp, path, data, ndp, p)
struct mount *mp;
char *path;
caddr_t data;
struct nameidata *ndp;
+ struct proc *p;
{
int error;
struct nfs_args args;
struct mbuf *nam;
+ struct vnode *vp;
char pth[MNAMELEN], hst[MNAMELEN];
- int len;
+ u_int len;
nfsv2fh_t nfh;
- if (mp->mnt_flag & MNT_UPDATE)
- return (0);
if (error = copyin(data, (caddr_t)&args, sizeof (struct nfs_args)))
return (error);
- if (error=copyin((caddr_t)args.fh, (caddr_t)&nfh, sizeof (nfsv2fh_t)))
+ if (error = copyin((caddr_t)args.fh, (caddr_t)&nfh, sizeof (nfsv2fh_t)))
return (error);
if (error = copyinstr(path, pth, MNAMELEN-1, &len))
return (error);
- bzero(&pth[len], MNAMELEN-len);
+ bzero(&pth[len], MNAMELEN - len);
if (error = copyinstr(args.hostname, hst, MNAMELEN-1, &len))
return (error);
- bzero(&hst[len], MNAMELEN-len);
+ bzero(&hst[len], MNAMELEN - len);
/* sockargs() call must be after above copyin() calls */
if (error = sockargs(&nam, (caddr_t)args.addr,
- sizeof (struct sockaddr), MT_SONAME))
+ args.addrlen, MT_SONAME))
return (error);
args.fh = &nfh;
- error = mountnfs(&args, mp, nam, pth, hst);
+ error = mountnfs(&args, mp, nam, pth, hst, &vp);
return (error);
}
/*
* Common code for mount and mountroot
*/
-mountnfs(argp, mp, nam, pth, hst)
+int
+mountnfs(argp, mp, nam, pth, hst, vpp)
register struct nfs_args *argp;
register struct mount *mp;
struct mbuf *nam;
char *pth, *hst;
+ struct vnode **vpp;
{
register struct nfsmount *nmp;
struct nfsnode *np;
int error;
fsid_t tfsid;
- MALLOC(nmp, struct nfsmount *, sizeof *nmp, M_NFSMNT, M_WAITOK);
- bzero((caddr_t)nmp, sizeof *nmp);
- mp->mnt_data = (qaddr_t)nmp;
- /*
- * Generate a unique nfs mount id. The problem is that a dev number
- * is not unique across multiple systems. The techique is as follows:
- * 1) Set to nblkdev,0 which will never be used otherwise
- * 2) Generate a first guess as nblkdev,nfs_mntid where nfs_mntid is
- * NOT 0
- * 3) Loop searching the mount list for another one with same id
- * If a match, increment val[0] and try again
- * NB: I increment val[0] { a long } instead of nfs_mntid { a u_char }
- * so that nfs is not limited to 255 mount points
- * Incrementing the high order bits does no real harm, since it
- * simply makes the major dev number tick up. The upper bound is
- * set to major dev 127 to avoid any sign extention problems
- */
- mp->mnt_stat.f_fsid.val[0] = makedev(nblkdev, 0);
- mp->mnt_stat.f_fsid.val[1] = MOUNT_NFS;
- if (++nfs_mntid == 0)
- ++nfs_mntid;
- tfsid.val[0] = makedev(nblkdev, nfs_mntid);
- tfsid.val[1] = MOUNT_NFS;
- while (getvfs(&tfsid)) {
- tfsid.val[0]++;
- nfs_mntid++;
- }
- if (major(tfsid.val[0]) > 127) {
- error = ENOENT;
- goto bad;
+ if (mp->mnt_flag & MNT_UPDATE) {
+ nmp = VFSTONFS(mp);
+ /* update paths, file handles, etc, here XXX */
+ m_freem(nam);
+ return (0);
+ } else {
+ MALLOC(nmp, struct nfsmount *, sizeof (struct nfsmount),
+ M_NFSMNT, M_WAITOK);
+ bzero((caddr_t)nmp, sizeof (struct nfsmount));
+ mp->mnt_data = (qaddr_t)nmp;
}
- mp->mnt_stat.f_fsid.val[0] = tfsid.val[0];
+ getnewfsid(mp, MOUNT_NFS);
nmp->nm_mountp = mp;
nmp->nm_flag = argp->flags;
- nmp->nm_rto = NFS_TIMEO;
- nmp->nm_rtt = -1;
- nmp->nm_rttvar = nmp->nm_rto << 1;
+ if ((nmp->nm_flag & (NFSMNT_NQNFS | NFSMNT_MYWRITE)) ==
+ (NFSMNT_NQNFS | NFSMNT_MYWRITE)) {
+ error = EPERM;
+ goto bad;
+ }
+ 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;
nmp->nm_retry = NFS_RETRANS;
nmp->nm_wsize = NFS_WSIZE;
nmp->nm_rsize = NFS_RSIZE;
+ nmp->nm_numgrps = NFS_MAXGRPS;
+ nmp->nm_readahead = NFS_DEFRAHEAD;
+ nmp->nm_leaseterm = NQ_DEFLEASE;
+ nmp->nm_deadthresh = NQ_DEADTHRESH;
+ nmp->nm_tnext = (struct nfsnode *)nmp;
+ nmp->nm_tprev = (struct nfsnode *)nmp;
+ nmp->nm_inprog = NULLVP;
bcopy((caddr_t)argp->fh, (caddr_t)&nmp->nm_fh, sizeof(nfsv2fh_t));
+ mp->mnt_stat.f_type = MOUNT_NFS;
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_rto = argp->timeo;
- /* NFS timeouts are specified in 1/10 sec. */
- nmp->nm_rto = (nmp->nm_rto * 10) / NFS_HZ;
- if (nmp->nm_rto < NFS_MINTIMEO)
- nmp->nm_rto = NFS_MINTIMEO;
- else if (nmp->nm_rto > NFS_MAXTIMEO)
- nmp->nm_rto = NFS_MAXTIMEO;
- nmp->nm_rttvar = nmp->nm_rto << 1;
+ 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) {
}
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;
- if (error = nfs_connect(nmp))
- goto bad;
- if (error = nfs_statfs(mp, &mp->mnt_stat))
+ /*
+ * 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
*/
if (error = nfs_nget(mp, &nmp->nm_fh, &np))
goto bad;
- /*
- * Unlock it, but keep the reference count.
- */
- nfs_unlock(NFSTOV(np));
+ *vpp = NFSTOV(np);
return (0);
bad:
nfs_disconnect(nmp);
- FREE(nmp, M_NFSMNT);
+ free((caddr_t)nmp, M_NFSMNT);
m_freem(nam);
return (error);
}
/*
* unmount system call
*/
-nfs_unmount(mp, mntflags)
+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 flags = 0;
- int error;
+ int error, flags = 0;
+ extern int doforce;
- if (mntflags & MNT_FORCE)
- return (EINVAL);
- if (mntflags & MNT_FORCE)
+ if (mntflags & MNT_FORCE) {
+ if (!doforce || mp == rootfs)
+ return (EINVAL);
flags |= FORCECLOSE;
+ }
nmp = VFSTONFS(mp);
- /*
- * Clear out the buffer cache
- */
- mntflushbuf(mp, 0);
- if (mntinvalbuf(mp))
- return (EBUSY);
/*
* Goes something like this..
* - Check for activity on the root vnode (other than ourselves).
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;
+
/*
- * Get rid of two reference counts, and unlock it on the second.
+ * There are two reference counts to get rid of here.
*/
vrele(vp);
- vput(vp);
+ vrele(vp);
+ vgone(vp);
nfs_disconnect(nmp);
m_freem(nmp->nm_nam);
- free((caddr_t)nmp, M_NFSMNT);
+
+ 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;
* Flush out the buffer cache
*/
/* ARGSUSED */
-nfs_sync(mp, waitfor)
+int
+nfs_sync(mp, waitfor, cred, p)
struct mount *mp;
int waitfor;
+ struct ucred *cred;
+ struct proc *p;
{
- if (syncprt)
- bufstats();
+ register struct vnode *vp;
+ int error, allerror = 0;
+
/*
* Force stale buffer cache information to be flushed.
*/
- mntflushbuf(mp, waitfor == MNT_WAIT ? B_SYNC : 0);
- return (0);
+loop:
+ for (vp = mp->mnt_mounth; vp; vp = vp->v_mountf) {
+ /*
+ * 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.le_next == NULL)
+ continue;
+ if (vget(vp))
+ goto loop;
+ if (error = VOP_FSYNC(vp, cred, waitfor, p))
+ allerror = error;
+ vput(vp);
+ }
+ return (allerror);
}
/*
- * At this point, this should never happen
+ * NFS flat namespace lookup.
+ * Currently unsupported.
*/
/* ARGSUSED */
-nfs_fhtovp(mp, fhp, vpp)
+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 */
-nfs_vptofh(mp, fhp, vpp)
- struct mount *mp;
+int
+nfs_vptofh(vp, fhp)
+ struct vnode *vp;
struct fid *fhp;
- struct vnode **vpp;
{
return (EINVAL);
* Vfs start routine, a no-op.
*/
/* ARGSUSED */
-nfs_start(mp, flags)
+int
+nfs_start(mp, flags, p)
struct mount *mp;
int flags;
+ struct proc *p;
{
return (0);
/*
* Do operations associated with quotas, not supported
*/
-nfs_quotactl(mp, cmd, uid, arg)
+/* ARGSUSED */
+int
+nfs_quotactl(mp, cmd, uid, arg, p)
struct mount *mp;
int cmd;
uid_t uid;
caddr_t arg;
+ struct proc *p;
{
-#ifdef lint
- mp = mp; cmd = cmd; uid = uid; arg = arg;
-#endif /* lint */
+
return (EOPNOTSUPP);
}