fab2013cb7
noatime, noexec, suiddir, nosuid, nosymfollow, union, noclusterr, noclusterw, multilabel, acls, force, update, async. These options correspond to MOPT_STDOPTS, MOPT_FORCE, MOPT_UPDATE, and MOPT_ASYNC. Currently, mount_nfs converts these "-o" options from strings to MNT_ flags via getmntopts(), and passes the flags from userspace to the kernel. This change will allow us in future to pass these mount options as strings directly to the kernel via nmount() when doing NFS mounts.
1141 lines
32 KiB
C
1141 lines
32 KiB
C
/*-
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* Copyright (c) 1989, 1993, 1995
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)nfs_vfsops.c 8.12 (Berkeley) 5/20/95
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_bootp.h"
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#include "opt_nfsroot.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bio.h>
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#include <sys/buf.h>
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#include <sys/clock.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/vnode.h>
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#include <sys/signalvar.h>
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#include <vm/vm.h>
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#include <vm/vm_extern.h>
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#include <vm/uma.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <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 <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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MALLOC_DEFINE(M_NFSREQ, "nfsclient_req", "NFS request header");
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MALLOC_DEFINE(M_NFSBIGFH, "nfsclient_bigfh", "NFS version 3 file handle");
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MALLOC_DEFINE(M_NFSDIROFF, "nfsclient_diroff", "NFS directory offset data");
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MALLOC_DEFINE(M_NFSHASH, "nfsclient_hash", "NFS hash tables");
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MALLOC_DEFINE(M_NFSDIRECTIO, "nfsclient_directio", "NFS Direct IO async write state");
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uma_zone_t nfsmount_zone;
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struct nfsstats nfsstats;
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SYSCTL_NODE(_vfs, OID_AUTO, nfs, CTLFLAG_RW, 0, "NFS filesystem");
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SYSCTL_STRUCT(_vfs_nfs, NFS_NFSSTATS, nfsstats, CTLFLAG_RW,
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&nfsstats, nfsstats, "S,nfsstats");
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static int nfs_ip_paranoia = 1;
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SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs_ip_paranoia, CTLFLAG_RW,
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&nfs_ip_paranoia, 0, "");
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#ifdef NFS_DEBUG
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int nfs_debug;
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SYSCTL_INT(_vfs_nfs, OID_AUTO, debug, CTLFLAG_RW, &nfs_debug, 0, "");
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#endif
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static int nfs_tprintf_initial_delay = NFS_TPRINTF_INITIAL_DELAY;
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SYSCTL_INT(_vfs_nfs, NFS_TPRINTF_INITIAL_DELAY,
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downdelayinitial, CTLFLAG_RW, &nfs_tprintf_initial_delay, 0, "");
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/* how long between console messages "nfs server foo not responding" */
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static int nfs_tprintf_delay = NFS_TPRINTF_DELAY;
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SYSCTL_INT(_vfs_nfs, NFS_TPRINTF_DELAY,
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downdelayinterval, CTLFLAG_RW, &nfs_tprintf_delay, 0, "");
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static void nfs_decode_args(struct mount *mp, struct nfsmount *nmp,
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struct nfs_args *argp);
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static int mountnfs(struct nfs_args *, struct mount *,
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struct sockaddr *, char *, struct vnode **,
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struct ucred *cred);
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static vfs_mount_t nfs_mount;
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static vfs_cmount_t nfs_cmount;
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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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static vfs_sysctl_t nfs_sysctl;
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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 = nfs_init,
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.vfs_mount = nfs_mount,
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.vfs_cmount = nfs_cmount,
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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 = nfs_uninit,
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.vfs_unmount = nfs_unmount,
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.vfs_sysctl = nfs_sysctl,
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};
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VFS_SET(nfs_vfsops, nfs, VFCF_NETWORK);
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/* So that loader and kldload(2) can find us, wherever we are.. */
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MODULE_VERSION(nfs, 1);
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static struct nfs_rpcops nfs_rpcops = {
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nfs_readrpc,
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nfs_writerpc,
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nfs_writebp,
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nfs_readlinkrpc,
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nfs_invaldir,
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nfs_commit,
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};
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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_nfs, OID_AUTO, diskless_valid, CTLFLAG_RD,
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&nfs_diskless_valid, 0, "");
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SYSCTL_STRING(_vfs_nfs, OID_AUTO, diskless_rootpath, CTLFLAG_RD,
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nfsv3_diskless.root_hostnam, 0, "");
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SYSCTL_OPAQUE(_vfs_nfs, 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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void nfsargs_ntoh(struct nfs_args *);
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static int nfs_mountdiskless(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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int
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nfs_iosize(struct nfsmount *nmp)
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{
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int iosize;
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/*
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* Calculate the size used for io buffers. Use the larger
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* of the two sizes to minimise nfs requests but make sure
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* that it is at least one VM page to avoid wasting buffer
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* space.
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*/
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iosize = imax(nmp->nm_rsize, nmp->nm_wsize);
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iosize = imax(iosize, PAGE_SIZE);
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return (iosize);
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}
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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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if (nfsv3_diskless.root_args.flags & NFSMNT_NFSV3) {
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nfsv3_diskless.root_fhsize = NFSX_V3FH;
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bcopy(nfs_diskless.root_fh, nfsv3_diskless.root_fh, NFSX_V3FH);
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} else {
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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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}
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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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/*
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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, v3 = (nmp->nm_flag & NFSMNT_NFSV3), retattr;
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struct mbuf *mreq, *mrep, *md, *mb;
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struct nfsnode *np;
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u_quad_t tquad;
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#ifndef nolint
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sfp = NULL;
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#endif
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error = vfs_busy(mp, LK_NOWAIT, NULL, td);
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if (error)
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return (error);
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error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np, LK_EXCLUSIVE);
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if (error) {
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vfs_unbusy(mp, td);
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return (error);
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}
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vp = NFSTOV(np);
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mtx_lock(&nmp->nm_mtx);
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if (v3 && (nmp->nm_state & NFSSTA_GOTFSINFO) == 0) {
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mtx_unlock(&nmp->nm_mtx);
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(void)nfs_fsinfo(nmp, vp, td->td_ucred, td);
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} else
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mtx_unlock(&nmp->nm_mtx);
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nfsstats.rpccnt[NFSPROC_FSSTAT]++;
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mreq = nfsm_reqhead(vp, NFSPROC_FSSTAT, NFSX_FH(v3));
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mb = mreq;
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bpos = mtod(mb, caddr_t);
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nfsm_fhtom(vp, v3);
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nfsm_request(vp, NFSPROC_FSSTAT, td, td->td_ucred);
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if (v3)
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nfsm_postop_attr(vp, retattr);
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if (error) {
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if (mrep != NULL)
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m_freem(mrep);
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goto nfsmout;
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}
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sfp = nfsm_dissect(struct nfs_statfs *, NFSX_STATFS(v3));
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mtx_lock(&nmp->nm_mtx);
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sbp->f_iosize = nfs_iosize(nmp);
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mtx_unlock(&nmp->nm_mtx);
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if (v3) {
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sbp->f_bsize = NFS_FABLKSIZE;
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tquad = fxdr_hyper(&sfp->sf_tbytes);
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sbp->f_blocks = tquad / NFS_FABLKSIZE;
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tquad = fxdr_hyper(&sfp->sf_fbytes);
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sbp->f_bfree = tquad / NFS_FABLKSIZE;
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tquad = fxdr_hyper(&sfp->sf_abytes);
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sbp->f_bavail = tquad / NFS_FABLKSIZE;
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sbp->f_files = (fxdr_unsigned(int32_t,
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sfp->sf_tfiles.nfsuquad[1]) & 0x7fffffff);
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sbp->f_ffree = (fxdr_unsigned(int32_t,
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sfp->sf_ffiles.nfsuquad[1]) & 0x7fffffff);
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} else {
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sbp->f_bsize = fxdr_unsigned(int32_t, sfp->sf_bsize);
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sbp->f_blocks = fxdr_unsigned(int32_t, sfp->sf_blocks);
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sbp->f_bfree = fxdr_unsigned(int32_t, sfp->sf_bfree);
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sbp->f_bavail = fxdr_unsigned(int32_t, sfp->sf_bavail);
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sbp->f_files = 0;
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sbp->f_ffree = 0;
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}
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m_freem(mrep);
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nfsmout:
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vput(vp);
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vfs_unbusy(mp, td);
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return (error);
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}
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/*
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* nfs version 3 fsinfo rpc call
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*/
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int
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nfs_fsinfo(struct nfsmount *nmp, struct vnode *vp, struct ucred *cred,
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struct thread *td)
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{
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struct nfsv3_fsinfo *fsp;
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u_int32_t pref, max;
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caddr_t bpos, dpos;
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int error = 0, retattr;
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struct mbuf *mreq, *mrep, *md, *mb;
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u_int64_t maxfsize;
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nfsstats.rpccnt[NFSPROC_FSINFO]++;
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mreq = nfsm_reqhead(vp, NFSPROC_FSINFO, NFSX_FH(1));
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mb = mreq;
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bpos = mtod(mb, caddr_t);
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nfsm_fhtom(vp, 1);
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nfsm_request(vp, NFSPROC_FSINFO, td, cred);
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nfsm_postop_attr(vp, retattr);
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if (!error) {
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fsp = nfsm_dissect(struct nfsv3_fsinfo *, NFSX_V3FSINFO);
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pref = fxdr_unsigned(u_int32_t, fsp->fs_wtpref);
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mtx_lock(&nmp->nm_mtx);
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if (pref < nmp->nm_wsize && pref >= NFS_FABLKSIZE)
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nmp->nm_wsize = (pref + NFS_FABLKSIZE - 1) &
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~(NFS_FABLKSIZE - 1);
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max = fxdr_unsigned(u_int32_t, fsp->fs_wtmax);
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if (max < nmp->nm_wsize && max > 0) {
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nmp->nm_wsize = max & ~(NFS_FABLKSIZE - 1);
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if (nmp->nm_wsize == 0)
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nmp->nm_wsize = max;
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}
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pref = fxdr_unsigned(u_int32_t, fsp->fs_rtpref);
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if (pref < nmp->nm_rsize && pref >= NFS_FABLKSIZE)
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nmp->nm_rsize = (pref + NFS_FABLKSIZE - 1) &
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~(NFS_FABLKSIZE - 1);
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max = fxdr_unsigned(u_int32_t, fsp->fs_rtmax);
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if (max < nmp->nm_rsize && max > 0) {
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nmp->nm_rsize = max & ~(NFS_FABLKSIZE - 1);
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if (nmp->nm_rsize == 0)
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nmp->nm_rsize = max;
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}
|
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pref = fxdr_unsigned(u_int32_t, fsp->fs_dtpref);
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if (pref < nmp->nm_readdirsize && pref >= NFS_DIRBLKSIZ)
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nmp->nm_readdirsize = (pref + NFS_DIRBLKSIZ - 1) &
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~(NFS_DIRBLKSIZ - 1);
|
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if (max < nmp->nm_readdirsize && max > 0) {
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nmp->nm_readdirsize = max & ~(NFS_DIRBLKSIZ - 1);
|
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if (nmp->nm_readdirsize == 0)
|
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nmp->nm_readdirsize = max;
|
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}
|
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maxfsize = fxdr_hyper(&fsp->fs_maxfilesize);
|
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if (maxfsize > 0 && maxfsize < nmp->nm_maxfilesize)
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nmp->nm_maxfilesize = maxfsize;
|
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nmp->nm_mountp->mnt_stat.f_iosize = nfs_iosize(nmp);
|
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nmp->nm_state |= NFSSTA_GOTFSINFO;
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
}
|
|
m_freem(mrep);
|
|
nfsmout:
|
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return (error);
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
* - build the rootfs mount point and call mountnfs() to do the rest.
|
|
*
|
|
* It is assumed to be safe to read, modify, and write the nfsv3_diskless
|
|
* structure, as well as other global NFS client variables here, as
|
|
* nfs_mountroot() will be called once in the boot before any other NFS
|
|
* client activity occurs.
|
|
*/
|
|
int
|
|
nfs_mountroot(struct mount *mp, struct thread *td)
|
|
{
|
|
struct nfsv3_diskless *nd = &nfsv3_diskless;
|
|
struct socket *so;
|
|
struct vnode *vp;
|
|
struct ifreq ir;
|
|
int error, i;
|
|
u_long l;
|
|
char buf[128];
|
|
char *cp;
|
|
|
|
#if defined(BOOTP_NFSROOT) && defined(BOOTP)
|
|
bootpc_init(); /* use bootp to get nfs_diskless filled in */
|
|
#elif defined(NFS_ROOT)
|
|
nfs_setup_diskless();
|
|
#endif
|
|
|
|
if (nfs_diskless_valid == 0)
|
|
return (-1);
|
|
if (nfs_diskless_valid == 1)
|
|
nfs_convert_diskless();
|
|
|
|
/*
|
|
* XXX splnet, so networks will receive...
|
|
*/
|
|
splnet();
|
|
|
|
/*
|
|
* Do enough of ifconfig(8) so that the critical net interface can
|
|
* talk to the server.
|
|
*/
|
|
error = socreate(nd->myif.ifra_addr.sa_family, &so, nd->root_args.sotype, 0,
|
|
td->td_ucred, td);
|
|
if (error)
|
|
panic("nfs_mountroot: socreate(%04x): %d",
|
|
nd->myif.ifra_addr.sa_family, error);
|
|
|
|
#if 0 /* XXX Bad idea */
|
|
/*
|
|
* We might not have been told the right interface, so we pass
|
|
* over the first ten interfaces of the same kind, until we get
|
|
* one of them configured.
|
|
*/
|
|
|
|
for (i = strlen(nd->myif.ifra_name) - 1;
|
|
nd->myif.ifra_name[i] >= '0' &&
|
|
nd->myif.ifra_name[i] <= '9';
|
|
nd->myif.ifra_name[i] ++) {
|
|
error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, td);
|
|
if(!error)
|
|
break;
|
|
}
|
|
#endif
|
|
error = ifioctl(so, SIOCAIFADDR, (caddr_t)&nd->myif, td);
|
|
if (error)
|
|
panic("nfs_mountroot: SIOCAIFADDR: %d", error);
|
|
if ((cp = getenv("boot.netif.mtu")) != NULL) {
|
|
ir.ifr_mtu = strtol(cp, NULL, 10);
|
|
bcopy(nd->myif.ifra_name, ir.ifr_name, IFNAMSIZ);
|
|
freeenv(cp);
|
|
error = ifioctl(so, SIOCSIFMTU, (caddr_t)&ir, td);
|
|
if (error)
|
|
printf("nfs_mountroot: SIOCSIFMTU: %d", error);
|
|
}
|
|
soclose(so);
|
|
|
|
/*
|
|
* If the gateway field is filled in, set it as the default route.
|
|
* Note that pxeboot will set a default route of 0 if the route
|
|
* is not set by the DHCP server. Check also for a value of 0
|
|
* to avoid panicking inappropriately in that situation.
|
|
*/
|
|
if (nd->mygateway.sin_len != 0 &&
|
|
nd->mygateway.sin_addr.s_addr != 0) {
|
|
struct sockaddr_in mask, sin;
|
|
|
|
bzero((caddr_t)&mask, sizeof(mask));
|
|
sin = mask;
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_len = sizeof(sin);
|
|
error = rtrequest(RTM_ADD, (struct sockaddr *)&sin,
|
|
(struct sockaddr *)&nd->mygateway,
|
|
(struct sockaddr *)&mask,
|
|
RTF_UP | RTF_GATEWAY, NULL);
|
|
if (error)
|
|
panic("nfs_mountroot: RTM_ADD: %d", error);
|
|
}
|
|
|
|
/*
|
|
* Create the rootfs mount point.
|
|
*/
|
|
nd->root_args.fh = nd->root_fh;
|
|
nd->root_args.fhsize = nd->root_fhsize;
|
|
l = ntohl(nd->root_saddr.sin_addr.s_addr);
|
|
snprintf(buf, sizeof(buf), "%ld.%ld.%ld.%ld:%s",
|
|
(l >> 24) & 0xff, (l >> 16) & 0xff,
|
|
(l >> 8) & 0xff, (l >> 0) & 0xff, nd->root_hostnam);
|
|
printf("NFS ROOT: %s\n", buf);
|
|
if ((error = nfs_mountdiskless(buf, MNT_RDONLY,
|
|
&nd->root_saddr, &nd->root_args, td, &vp, mp)) != 0) {
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
inittodr(ntohl(nd->root_time));
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Internal version of mount system call for diskless setup.
|
|
*/
|
|
static int
|
|
nfs_mountdiskless(char *path, int mountflag,
|
|
struct sockaddr_in *sin, struct nfs_args *args, struct thread *td,
|
|
struct vnode **vpp, struct mount *mp)
|
|
{
|
|
struct sockaddr *nam;
|
|
int error;
|
|
|
|
MNT_ILOCK(mp);
|
|
mp->mnt_kern_flag = 0;
|
|
mp->mnt_flag = mountflag;
|
|
MNT_IUNLOCK(mp);
|
|
nam = sodupsockaddr((struct sockaddr *)sin, M_WAITOK);
|
|
if ((error = mountnfs(args, mp, nam, path, vpp,
|
|
td->td_ucred)) != 0) {
|
|
printf("nfs_mountroot: mount %s on /: %d\n", path, error);
|
|
return (error);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
nfs_decode_args(struct mount *mp, struct nfsmount *nmp, struct nfs_args *argp)
|
|
{
|
|
int s;
|
|
int adjsock;
|
|
int maxio;
|
|
|
|
s = splnet();
|
|
|
|
/*
|
|
* Set read-only flag if requested; otherwise, clear it if this is
|
|
* an update. If this is not an update, then either the read-only
|
|
* flag is already clear, or this is a root mount and it was set
|
|
* intentionally at some previous point.
|
|
*/
|
|
if (vfs_getopt(mp->mnt_optnew, "ro", NULL, NULL) == 0) {
|
|
MNT_ILOCK(mp);
|
|
mp->mnt_flag |= MNT_RDONLY;
|
|
MNT_IUNLOCK(mp);
|
|
} else if (mp->mnt_flag & MNT_UPDATE) {
|
|
MNT_ILOCK(mp);
|
|
mp->mnt_flag &= ~MNT_RDONLY;
|
|
MNT_IUNLOCK(mp);
|
|
}
|
|
|
|
/*
|
|
* Silently clear NFSMNT_NOCONN if it's a TCP mount, it makes
|
|
* no sense in that context. Also, set up appropriate retransmit
|
|
* and soft timeout behavior.
|
|
*/
|
|
if (argp->sotype == SOCK_STREAM) {
|
|
nmp->nm_flag &= ~NFSMNT_NOCONN;
|
|
nmp->nm_flag |= NFSMNT_DUMBTIMR;
|
|
nmp->nm_timeo = NFS_MAXTIMEO;
|
|
nmp->nm_retry = NFS_RETRANS_TCP;
|
|
}
|
|
|
|
/* Also clear RDIRPLUS if not NFSv3, it crashes some servers */
|
|
if ((argp->flags & NFSMNT_NFSV3) == 0)
|
|
nmp->nm_flag &= ~NFSMNT_RDIRPLUS;
|
|
|
|
/* Re-bind if rsrvd port requested and wasn't on one */
|
|
adjsock = !(nmp->nm_flag & NFSMNT_RESVPORT)
|
|
&& (argp->flags & NFSMNT_RESVPORT);
|
|
/* Also re-bind if we're switching to/from a connected UDP socket */
|
|
adjsock |= ((nmp->nm_flag & NFSMNT_NOCONN) !=
|
|
(argp->flags & NFSMNT_NOCONN));
|
|
|
|
/* Update flags atomically. Don't change the lock bits. */
|
|
nmp->nm_flag = argp->flags | nmp->nm_flag;
|
|
splx(s);
|
|
|
|
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_NFSV3) {
|
|
if (argp->sotype == SOCK_DGRAM)
|
|
maxio = NFS_MAXDGRAMDATA;
|
|
else
|
|
maxio = NFS_MAXDATA;
|
|
} else
|
|
maxio = NFS_V2MAXDATA;
|
|
|
|
if ((argp->flags & NFSMNT_WSIZE) && argp->wsize > 0) {
|
|
nmp->nm_wsize = argp->wsize;
|
|
/* Round down to multiple of blocksize */
|
|
nmp->nm_wsize &= ~(NFS_FABLKSIZE - 1);
|
|
if (nmp->nm_wsize <= 0)
|
|
nmp->nm_wsize = NFS_FABLKSIZE;
|
|
}
|
|
if (nmp->nm_wsize > maxio)
|
|
nmp->nm_wsize = maxio;
|
|
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 &= ~(NFS_FABLKSIZE - 1);
|
|
if (nmp->nm_rsize <= 0)
|
|
nmp->nm_rsize = NFS_FABLKSIZE;
|
|
}
|
|
if (nmp->nm_rsize > maxio)
|
|
nmp->nm_rsize = maxio;
|
|
if (nmp->nm_rsize > MAXBSIZE)
|
|
nmp->nm_rsize = MAXBSIZE;
|
|
|
|
if ((argp->flags & NFSMNT_READDIRSIZE) && argp->readdirsize > 0) {
|
|
nmp->nm_readdirsize = argp->readdirsize;
|
|
}
|
|
if (nmp->nm_readdirsize > maxio)
|
|
nmp->nm_readdirsize = maxio;
|
|
if (nmp->nm_readdirsize > nmp->nm_rsize)
|
|
nmp->nm_readdirsize = nmp->nm_rsize;
|
|
|
|
if ((argp->flags & NFSMNT_ACREGMIN) && argp->acregmin >= 0)
|
|
nmp->nm_acregmin = argp->acregmin;
|
|
else
|
|
nmp->nm_acregmin = NFS_MINATTRTIMO;
|
|
if ((argp->flags & NFSMNT_ACREGMAX) && argp->acregmax >= 0)
|
|
nmp->nm_acregmax = argp->acregmax;
|
|
else
|
|
nmp->nm_acregmax = NFS_MAXATTRTIMO;
|
|
if ((argp->flags & NFSMNT_ACDIRMIN) && argp->acdirmin >= 0)
|
|
nmp->nm_acdirmin = argp->acdirmin;
|
|
else
|
|
nmp->nm_acdirmin = NFS_MINDIRATTRTIMO;
|
|
if ((argp->flags & NFSMNT_ACDIRMAX) && argp->acdirmax >= 0)
|
|
nmp->nm_acdirmax = argp->acdirmax;
|
|
else
|
|
nmp->nm_acdirmax = NFS_MAXDIRATTRTIMO;
|
|
if (nmp->nm_acdirmin > nmp->nm_acdirmax)
|
|
nmp->nm_acdirmin = nmp->nm_acdirmax;
|
|
if (nmp->nm_acregmin > nmp->nm_acregmax)
|
|
nmp->nm_acregmin = nmp->nm_acregmax;
|
|
|
|
if ((argp->flags & NFSMNT_MAXGRPS) && argp->maxgrouplist >= 0) {
|
|
if (argp->maxgrouplist <= NFS_MAXGRPS)
|
|
nmp->nm_numgrps = argp->maxgrouplist;
|
|
else
|
|
nmp->nm_numgrps = NFS_MAXGRPS;
|
|
}
|
|
if ((argp->flags & NFSMNT_READAHEAD) && argp->readahead >= 0) {
|
|
if (argp->readahead <= NFS_MAXRAHEAD)
|
|
nmp->nm_readahead = argp->readahead;
|
|
else
|
|
nmp->nm_readahead = NFS_MAXRAHEAD;
|
|
}
|
|
if ((argp->flags & NFSMNT_WCOMMITSIZE) && argp->wcommitsize >= 0) {
|
|
if (argp->wcommitsize < nmp->nm_wsize)
|
|
nmp->nm_wcommitsize = nmp->nm_wsize;
|
|
else
|
|
nmp->nm_wcommitsize = argp->wcommitsize;
|
|
}
|
|
if ((argp->flags & NFSMNT_DEADTHRESH) && argp->deadthresh >= 0) {
|
|
if (argp->deadthresh <= NFS_MAXDEADTHRESH)
|
|
nmp->nm_deadthresh = argp->deadthresh;
|
|
else
|
|
nmp->nm_deadthresh = NFS_MAXDEADTHRESH;
|
|
}
|
|
|
|
adjsock |= ((nmp->nm_sotype != argp->sotype) ||
|
|
(nmp->nm_soproto != argp->proto));
|
|
nmp->nm_sotype = argp->sotype;
|
|
nmp->nm_soproto = argp->proto;
|
|
|
|
if (nmp->nm_so && adjsock) {
|
|
nfs_safedisconnect(nmp);
|
|
if (nmp->nm_sotype == SOCK_DGRAM)
|
|
while (nfs_connect(nmp, NULL)) {
|
|
printf("nfs_args: retrying connect\n");
|
|
(void) tsleep((caddr_t)&lbolt, PSOCK, "nfscon", 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
static const char *nfs_opts[] = { "from", "nfs_args",
|
|
"noatime", "noexec", "suiddir", "nosuid", "nosymfollow", "union",
|
|
"noclusterr", "noclusterw", "multilabel", "acls", "force", "update",
|
|
"async", NULL };
|
|
|
|
/*
|
|
* 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, struct thread *td)
|
|
{
|
|
int error;
|
|
struct nfs_args args;
|
|
struct sockaddr *nam;
|
|
struct vnode *vp;
|
|
char hst[MNAMELEN];
|
|
size_t len;
|
|
u_char nfh[NFSX_V3FHMAX];
|
|
|
|
if (vfs_filteropt(mp->mnt_optnew, nfs_opts)) {
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (mp->mnt_flag & MNT_ROOTFS) {
|
|
error = nfs_mountroot(mp, td);
|
|
goto out;
|
|
}
|
|
|
|
error = vfs_copyopt(mp->mnt_optnew, "nfs_args", &args, sizeof args);
|
|
if (error)
|
|
goto out;
|
|
|
|
if (args.version != NFS_ARGSVERSION) {
|
|
error = EPROGMISMATCH;
|
|
goto out;
|
|
}
|
|
if (mp->mnt_flag & MNT_UPDATE) {
|
|
struct nfsmount *nmp = VFSTONFS(mp);
|
|
|
|
if (nmp == NULL) {
|
|
error = EIO;
|
|
goto out;
|
|
}
|
|
/*
|
|
* 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_NOLOCKD /*|NFSMNT_XLATECOOKIE*/)) |
|
|
(nmp->nm_flag &
|
|
(NFSMNT_NFSV3 | NFSMNT_NOLOCKD /*|NFSMNT_XLATECOOKIE*/));
|
|
nfs_decode_args(mp, nmp, &args);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Make the nfs_ip_paranoia sysctl serve as the default connection
|
|
* or no-connection mode for those protocols that support
|
|
* no-connection mode (the flag will be cleared later for protocols
|
|
* that do not support no-connection mode). This will allow a client
|
|
* to receive replies from a different IP then the request was
|
|
* sent to. Note: default value for nfs_ip_paranoia is 1 (paranoid),
|
|
* not 0.
|
|
*/
|
|
if (nfs_ip_paranoia == 0)
|
|
args.flags |= NFSMNT_NOCONN;
|
|
if (args.fhsize < 0 || args.fhsize > NFSX_V3FHMAX) {
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
error = copyin((caddr_t)args.fh, (caddr_t)nfh, args.fhsize);
|
|
if (error)
|
|
goto out;
|
|
error = copyinstr(args.hostname, hst, MNAMELEN-1, &len);
|
|
if (error)
|
|
goto out;
|
|
bzero(&hst[len], MNAMELEN - len);
|
|
/* sockargs() call must be after above copyin() calls */
|
|
error = getsockaddr(&nam, (caddr_t)args.addr, args.addrlen);
|
|
if (error)
|
|
goto out;
|
|
args.fh = nfh;
|
|
error = mountnfs(&args, mp, nam, hst, &vp, td->td_ucred);
|
|
out:
|
|
if (!error) {
|
|
MNT_ILOCK(mp);
|
|
mp->mnt_kern_flag |= (MNTK_MPSAFE|MNTK_LOOKUP_SHARED);
|
|
MNT_IUNLOCK(mp);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
|
|
/*
|
|
* 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_cmount(struct mntarg *ma, void *data, int flags, struct thread *td)
|
|
{
|
|
int error;
|
|
struct nfs_args args;
|
|
|
|
error = copyin(data, &args, sizeof (struct nfs_args));
|
|
if (error)
|
|
return error;
|
|
|
|
ma = mount_arg(ma, "nfs_args", &args, sizeof args);
|
|
|
|
error = kernel_mount(ma, flags);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Common code for mount and mountroot
|
|
*/
|
|
static int
|
|
mountnfs(struct nfs_args *argp, struct mount *mp, struct sockaddr *nam,
|
|
char *hst, struct vnode **vpp, struct ucred *cred)
|
|
{
|
|
struct nfsmount *nmp;
|
|
struct nfsnode *np;
|
|
int error;
|
|
struct vattr attrs;
|
|
|
|
if (mp->mnt_flag & MNT_UPDATE) {
|
|
nmp = VFSTONFS(mp);
|
|
/* update paths, file handles, etc, here XXX */
|
|
FREE(nam, M_SONAME);
|
|
return (0);
|
|
} else {
|
|
nmp = uma_zalloc(nfsmount_zone, M_WAITOK);
|
|
bzero((caddr_t)nmp, sizeof (struct nfsmount));
|
|
TAILQ_INIT(&nmp->nm_bufq);
|
|
mp->mnt_data = nmp;
|
|
}
|
|
vfs_getnewfsid(mp);
|
|
nmp->nm_mountp = mp;
|
|
mtx_init(&nmp->nm_mtx, "NFSmount lock", NULL, MTX_DEF);
|
|
|
|
/*
|
|
* V2 can only handle 32 bit filesizes. A 4GB-1 limit may be too
|
|
* high, depending on whether we end up with negative offsets in
|
|
* the client or server somewhere. 2GB-1 may be safer.
|
|
*
|
|
* For V3, nfs_fsinfo will adjust this as necessary. Assume maximum
|
|
* that we can handle until we find out otherwise.
|
|
* XXX Our "safe" limit on the client is what we can store in our
|
|
* buffer cache using signed(!) block numbers.
|
|
*/
|
|
if ((argp->flags & NFSMNT_NFSV3) == 0)
|
|
nmp->nm_maxfilesize = 0xffffffffLL;
|
|
else
|
|
nmp->nm_maxfilesize = (u_int64_t)0x80000000 * DEV_BSIZE - 1;
|
|
|
|
nmp->nm_timeo = NFS_TIMEO;
|
|
nmp->nm_retry = NFS_RETRANS;
|
|
if ((argp->flags & NFSMNT_NFSV3) && argp->sotype == SOCK_STREAM) {
|
|
nmp->nm_wsize = nmp->nm_rsize = NFS_MAXDATA;
|
|
} else {
|
|
nmp->nm_wsize = NFS_WSIZE;
|
|
nmp->nm_rsize = NFS_RSIZE;
|
|
}
|
|
nmp->nm_wcommitsize = hibufspace / (desiredvnodes / 1000);
|
|
nmp->nm_readdirsize = NFS_READDIRSIZE;
|
|
nmp->nm_numgrps = NFS_MAXGRPS;
|
|
nmp->nm_readahead = NFS_DEFRAHEAD;
|
|
nmp->nm_deadthresh = NFS_MAXDEADTHRESH;
|
|
nmp->nm_tprintf_delay = nfs_tprintf_delay;
|
|
if (nmp->nm_tprintf_delay < 0)
|
|
nmp->nm_tprintf_delay = 0;
|
|
nmp->nm_tprintf_initial_delay = nfs_tprintf_initial_delay;
|
|
if (nmp->nm_tprintf_initial_delay < 0)
|
|
nmp->nm_tprintf_initial_delay = 0;
|
|
nmp->nm_fhsize = argp->fhsize;
|
|
bcopy((caddr_t)argp->fh, (caddr_t)nmp->nm_fh, argp->fhsize);
|
|
bcopy(hst, mp->mnt_stat.f_mntfromname, MNAMELEN);
|
|
nmp->nm_nam = nam;
|
|
/* Set up the sockets and per-host congestion */
|
|
nmp->nm_sotype = argp->sotype;
|
|
nmp->nm_soproto = argp->proto;
|
|
nmp->nm_rpcops = &nfs_rpcops;
|
|
|
|
nfs_decode_args(mp, nmp, argp);
|
|
|
|
/*
|
|
* 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, NULL)))
|
|
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.
|
|
*/
|
|
mtx_lock(&nmp->nm_mtx);
|
|
mp->mnt_stat.f_iosize = nfs_iosize(nmp);
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
/*
|
|
* 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).
|
|
*/
|
|
error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np, LK_EXCLUSIVE);
|
|
if (error)
|
|
goto bad;
|
|
*vpp = NFSTOV(np);
|
|
|
|
/*
|
|
* Get file attributes and transfer parameters for the
|
|
* mountpoint. This has the side effect of filling in
|
|
* (*vpp)->v_type with the correct value.
|
|
*/
|
|
if (argp->flags & NFSMNT_NFSV3)
|
|
nfs_fsinfo(nmp, *vpp, curthread->td_ucred, curthread);
|
|
else
|
|
VOP_GETATTR(*vpp, &attrs, curthread->td_ucred, curthread);
|
|
|
|
/*
|
|
* Lose the lock but keep the ref.
|
|
*/
|
|
VOP_UNLOCK(*vpp, 0, curthread);
|
|
|
|
return (0);
|
|
bad:
|
|
nfs_disconnect(nmp);
|
|
mtx_destroy(&nmp->nm_mtx);
|
|
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)
|
|
goto out;
|
|
}
|
|
/* We hold 1 extra ref on the root vnode; see comment in mountnfs(). */
|
|
error = vflush(mp, 1, flags, td);
|
|
if (error)
|
|
goto out;
|
|
|
|
/*
|
|
* We are now committed to the unmount.
|
|
*/
|
|
nfs_disconnect(nmp);
|
|
FREE(nmp->nm_nam, M_SONAME);
|
|
|
|
mtx_destroy(&nmp->nm_mtx);
|
|
uma_zfree(nfsmount_zone, nmp);
|
|
out:
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Return root of a filesystem
|
|
*/
|
|
static int
|
|
nfs_root(struct mount *mp, int flags, struct vnode **vpp, struct thread *td)
|
|
{
|
|
struct vnode *vp;
|
|
struct nfsmount *nmp;
|
|
struct nfsnode *np;
|
|
int error;
|
|
|
|
nmp = VFSTONFS(mp);
|
|
error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np, flags);
|
|
if (error)
|
|
return error;
|
|
vp = NFSTOV(np);
|
|
/*
|
|
* Get transfer parameters and attributes for root vnode once.
|
|
*/
|
|
mtx_lock(&nmp->nm_mtx);
|
|
if ((nmp->nm_state & NFSSTA_GOTFSINFO) == 0 &&
|
|
(nmp->nm_flag & NFSMNT_NFSV3)) {
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
nfs_fsinfo(nmp, vp, curthread->td_ucred, curthread);
|
|
} else
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
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 thread *td)
|
|
{
|
|
struct vnode *vp, *mvp;
|
|
int error, allerror = 0;
|
|
|
|
/*
|
|
* Force stale buffer cache information to be flushed.
|
|
*/
|
|
MNT_ILOCK(mp);
|
|
loop:
|
|
MNT_VNODE_FOREACH(vp, mp, mvp) {
|
|
VI_LOCK(vp);
|
|
MNT_IUNLOCK(mp);
|
|
if (VOP_ISLOCKED(vp, NULL) ||
|
|
vp->v_bufobj.bo_dirty.bv_cnt == 0 ||
|
|
waitfor == MNT_LAZY) {
|
|
VI_UNLOCK(vp);
|
|
MNT_ILOCK(mp);
|
|
continue;
|
|
}
|
|
if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td)) {
|
|
MNT_ILOCK(mp);
|
|
MNT_VNODE_FOREACH_ABORT_ILOCKED(mp, mvp);
|
|
goto loop;
|
|
}
|
|
error = VOP_FSYNC(vp, waitfor, td);
|
|
if (error)
|
|
allerror = error;
|
|
VOP_UNLOCK(vp, 0, td);
|
|
vrele(vp);
|
|
|
|
MNT_ILOCK(mp);
|
|
}
|
|
MNT_IUNLOCK(mp);
|
|
return (allerror);
|
|
}
|
|
|
|
static int
|
|
nfs_sysctl(struct mount *mp, fsctlop_t op, struct sysctl_req *req)
|
|
{
|
|
struct nfsmount *nmp = VFSTONFS(mp);
|
|
struct vfsquery vq;
|
|
int error;
|
|
|
|
bzero(&vq, sizeof(vq));
|
|
switch (op) {
|
|
#if 0
|
|
case VFS_CTL_NOLOCKS:
|
|
val = (nmp->nm_flag & NFSMNT_NOLOCKS) ? 1 : 0;
|
|
if (req->oldptr != NULL) {
|
|
error = SYSCTL_OUT(req, &val, sizeof(val));
|
|
if (error)
|
|
return (error);
|
|
}
|
|
if (req->newptr != NULL) {
|
|
error = SYSCTL_IN(req, &val, sizeof(val));
|
|
if (error)
|
|
return (error);
|
|
if (val)
|
|
nmp->nm_flag |= NFSMNT_NOLOCKS;
|
|
else
|
|
nmp->nm_flag &= ~NFSMNT_NOLOCKS;
|
|
}
|
|
break;
|
|
#endif
|
|
case VFS_CTL_QUERY:
|
|
mtx_lock(&nmp->nm_mtx);
|
|
if (nmp->nm_state & NFSSTA_TIMEO)
|
|
vq.vq_flags |= VQ_NOTRESP;
|
|
mtx_unlock(&nmp->nm_mtx);
|
|
#if 0
|
|
if (!(nmp->nm_flag & NFSMNT_NOLOCKS) &&
|
|
(nmp->nm_state & NFSSTA_LOCKTIMEO))
|
|
vq.vq_flags |= VQ_NOTRESPLOCK;
|
|
#endif
|
|
error = SYSCTL_OUT(req, &vq, sizeof(vq));
|
|
break;
|
|
case VFS_CTL_TIMEO:
|
|
if (req->oldptr != NULL) {
|
|
error = SYSCTL_OUT(req, &nmp->nm_tprintf_initial_delay,
|
|
sizeof(nmp->nm_tprintf_initial_delay));
|
|
if (error)
|
|
return (error);
|
|
}
|
|
if (req->newptr != NULL) {
|
|
error = vfs_suser(mp, req->td);
|
|
if (error)
|
|
return (error);
|
|
error = SYSCTL_IN(req, &nmp->nm_tprintf_initial_delay,
|
|
sizeof(nmp->nm_tprintf_initial_delay));
|
|
if (error)
|
|
return (error);
|
|
if (nmp->nm_tprintf_initial_delay < 0)
|
|
nmp->nm_tprintf_initial_delay = 0;
|
|
}
|
|
break;
|
|
default:
|
|
return (ENOTSUP);
|
|
}
|
|
return (0);
|
|
}
|