13950bd2ed
default. This code should go away soon.
1151 lines
31 KiB
C
1151 lines
31 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)nfs_vfsops.c 8.12 (Berkeley) 5/20/95
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* $Id: nfs_vfsops.c,v 1.72 1998/06/07 17:12:30 dfr Exp $
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*/
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#include <sys/param.h>
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#include <sys/sockio.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/systm.h>
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#include <vm/vm.h>
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#include <vm/vm_extern.h>
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#include <vm/vm_zone.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/nfsproto.h>
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#include <nfs/nfs.h>
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#include <nfs/nfsnode.h>
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#include <nfs/nfsmount.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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extern int nfs_mountroot __P((struct mount *mp));
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extern int nfs_ticks;
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MALLOC_DEFINE(M_NFSREQ, "NFS req", "NFS request header");
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MALLOC_DEFINE(M_NFSBIGFH, "NFSV3 bigfh", "NFS version 3 file handle");
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MALLOC_DEFINE(M_NFSD, "NFS daemon", "Nfs server daemon structure");
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MALLOC_DEFINE(M_NFSDIROFF, "NFSV3 diroff", "NFS directory offset data");
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MALLOC_DEFINE(M_NFSRVDESC, "NFSV3 srvdesc", "NFS server socket descriptor");
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MALLOC_DEFINE(M_NFSUID, "NFS uid", "Nfs uid mapping structure");
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MALLOC_DEFINE(M_NQLEASE, "NQNFS Lease", "Nqnfs lease");
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MALLOC_DEFINE(M_NFSHASH, "NFS hash", "NFS hash tables");
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vm_zone_t nfsmount_zone;
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struct nfsstats nfsstats;
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SYSCTL_NODE(_vfs, MOUNT_NFS, nfs, CTLFLAG_RW, 0, "NFS filesystem");
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SYSCTL_STRUCT(_vfs_nfs, NFS_NFSSTATS, nfsstats, CTLFLAG_RD,
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&nfsstats, nfsstats, "");
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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_iosize __P((struct nfsmount *nmp));
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static void nfs_decode_args __P((struct nfsmount *nmp,
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struct nfs_args *argp));
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static int mountnfs __P((struct nfs_args *,struct mount *,
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struct sockaddr *,char *,char *,struct vnode **));
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static int nfs_mount __P(( struct mount *mp, char *path, caddr_t data,
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struct nameidata *ndp, struct proc *p));
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static int nfs_start __P(( struct mount *mp, int flags,
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struct proc *p));
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static int nfs_unmount __P(( struct mount *mp, int mntflags,
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struct proc *p));
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static int nfs_root __P(( struct mount *mp, struct vnode **vpp));
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static int nfs_quotactl __P(( struct mount *mp, int cmds, uid_t uid,
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caddr_t arg, struct proc *p));
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static int nfs_statfs __P(( struct mount *mp, struct statfs *sbp,
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struct proc *p));
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static int nfs_sync __P(( struct mount *mp, int waitfor,
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struct ucred *cred, struct proc *p));
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static int nfs_vptofh __P(( struct vnode *vp, struct fid *fhp));
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static int nfs_fhtovp __P((struct mount *mp, struct fid *fhp,
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struct sockaddr *nam, struct vnode **vpp,
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int *exflagsp, struct ucred **credanonp));
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static int nfs_vget __P((struct mount *, ino_t, struct vnode **));
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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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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, VFCF_NETWORK);
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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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SYSCTL_STRING(_vfs_nfs, OID_AUTO, diskless_swappath, CTLFLAG_RD,
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nfsv3_diskless.swap_hostnam, 0, "");
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SYSCTL_OPAQUE(_vfs_nfs, OID_AUTO, diskless_swapaddr, CTLFLAG_RD,
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&nfsv3_diskless.swap_saddr, sizeof nfsv3_diskless.swap_saddr,
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"%Ssockaddr_in","");
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void nfsargs_ntoh __P((struct nfs_args *));
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static int nfs_mountdiskless __P((char *, char *, int,
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struct sockaddr_in *, struct nfs_args *,
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struct proc *, struct vnode **,
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struct mount **));
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static void nfs_convert_diskless __P((void));
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static void nfs_convert_oargs __P((struct nfs_args *args,
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struct onfs_args *oargs));
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static int
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nfs_iosize(nmp)
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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 = max(nmp->nm_rsize, nmp->nm_wsize);
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if (iosize < PAGE_SIZE) 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(args, oargs)
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struct nfs_args *args;
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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->leaseterm = oargs->leaseterm;
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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()
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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.swap_args,&nfs_diskless.swap_args);
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nfsv3_diskless.swap_fhsize = NFSX_V2FH;
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bcopy(nfs_diskless.swap_fh,nfsv3_diskless.swap_fh,NFSX_V2FH);
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bcopy(&nfs_diskless.swap_saddr,&nfsv3_diskless.swap_saddr,
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sizeof(struct sockaddr_in));
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bcopy(nfs_diskless.swap_hostnam,nfsv3_diskless.swap_hostnam, MNAMELEN);
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nfsv3_diskless.swap_nblks = nfs_diskless.swap_nblks;
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bcopy(&nfs_diskless.swap_ucred, &nfsv3_diskless.swap_ucred,
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sizeof(struct ucred));
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nfs_convert_oargs(&nfsv3_diskless.root_args,&nfs_diskless.root_args);
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nfsv3_diskless.root_fhsize = NFSX_V2FH;
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bcopy(nfs_diskless.root_fh,nfsv3_diskless.root_fh,NFSX_V2FH);
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bcopy(&nfs_diskless.root_saddr,&nfsv3_diskless.root_saddr,
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sizeof(struct sockaddr_in));
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bcopy(nfs_diskless.root_hostnam,nfsv3_diskless.root_hostnam, MNAMELEN);
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nfsv3_diskless.root_time = nfs_diskless.root_time;
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bcopy(nfs_diskless.my_hostnam,nfsv3_diskless.my_hostnam,
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MAXHOSTNAMELEN);
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nfs_diskless_valid = 3;
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}
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/*
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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 nfs_statfs *sfp;
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register caddr_t cp;
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register u_int32_t *tl;
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register int32_t t1, t2;
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caddr_t bpos, dpos, cp2;
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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, *mb2;
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struct ucred *cred;
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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 = (struct nfs_statfs *)0;
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#endif
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error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np);
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if (error)
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return (error);
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vp = NFSTOV(np);
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cred = crget();
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cred->cr_ngroups = 1;
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if (v3 && (nmp->nm_state & NFSSTA_GOTFSINFO) == 0)
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(void)nfs_fsinfo(nmp, vp, cred, p);
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nfsstats.rpccnt[NFSPROC_FSSTAT]++;
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nfsm_reqhead(vp, NFSPROC_FSSTAT, NFSX_FH(v3));
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nfsm_fhtom(vp, v3);
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nfsm_request(vp, NFSPROC_FSSTAT, p, cred);
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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_free(mrep);
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goto nfsmout;
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}
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nfsm_dissect(sfp, struct nfs_statfs *, NFSX_STATFS(v3));
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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_iosize(nmp);
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if (v3) {
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sbp->f_bsize = NFS_FABLKSIZE;
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fxdr_hyper(&sfp->sf_tbytes, &tquad);
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sbp->f_blocks = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
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fxdr_hyper(&sfp->sf_fbytes, &tquad);
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sbp->f_bfree = (long)(tquad / ((u_quad_t)NFS_FABLKSIZE));
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fxdr_hyper(&sfp->sf_abytes, &tquad);
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sbp->f_bavail = (long)(tquad / ((u_quad_t)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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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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vput(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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* nfs version 3 fsinfo rpc call
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*/
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int
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nfs_fsinfo(nmp, vp, cred, p)
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register struct nfsmount *nmp;
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register struct vnode *vp;
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struct ucred *cred;
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struct proc *p;
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{
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register struct nfsv3_fsinfo *fsp;
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register caddr_t cp;
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register int32_t t1, t2;
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register u_int32_t *tl, pref, max;
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caddr_t bpos, dpos, cp2;
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int error = 0, retattr;
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struct mbuf *mreq, *mrep, *md, *mb, *mb2;
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u_int64_t maxfsize;
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nfsstats.rpccnt[NFSPROC_FSINFO]++;
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nfsm_reqhead(vp, NFSPROC_FSINFO, NFSX_FH(1));
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nfsm_fhtom(vp, 1);
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nfsm_request(vp, NFSPROC_FSINFO, p, cred);
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nfsm_postop_attr(vp, retattr);
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if (!error) {
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nfsm_dissect(fsp, struct nfsv3_fsinfo *, NFSX_V3FSINFO);
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pref = fxdr_unsigned(u_int32_t, fsp->fs_wtpref);
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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) {
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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) {
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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)
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nmp->nm_readdirsize = pref;
|
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if (max < nmp->nm_readdirsize) {
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nmp->nm_readdirsize = max;
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}
|
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fxdr_hyper(&fsp->fs_maxfilesize, &maxfsize);
|
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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_state |= NFSSTA_GOTFSINFO;
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}
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nfsm_reqdone;
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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
|
|
* bootstrap.
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|
* 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.
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|
*/
|
|
int
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|
nfs_mountroot(mp)
|
|
struct mount *mp;
|
|
{
|
|
struct mount *swap_mp;
|
|
struct nfsv3_diskless *nd = &nfsv3_diskless;
|
|
struct socket *so;
|
|
struct vnode *vp;
|
|
struct proc *p = curproc; /* XXX */
|
|
int error, i;
|
|
u_long l;
|
|
char buf[128];
|
|
|
|
/*
|
|
* XXX time must be non-zero when we init the interface or else
|
|
* the arp code will wedge...
|
|
*/
|
|
while (time_second == 0)
|
|
tsleep(&time_second, PZERO+8, "arpkludge", 10);
|
|
|
|
if (nfs_diskless_valid==1)
|
|
nfs_convert_diskless();
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|
|
/*
|
|
* XXX splnet, so networks will receive...
|
|
*/
|
|
splnet();
|
|
|
|
#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.
|
|
*/
|
|
error = socreate(nd->myif.ifra_addr.sa_family, &so, SOCK_DGRAM, 0, p);
|
|
if (error)
|
|
panic("nfs_mountroot: socreate(%04x): %d",
|
|
nd->myif.ifra_addr.sa_family, error);
|
|
|
|
/*
|
|
* 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, p);
|
|
if(!error)
|
|
break;
|
|
}
|
|
if (error)
|
|
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);
|
|
error = rtrequest(RTM_ADD, (struct sockaddr *)&sin,
|
|
(struct sockaddr *)&nd->mygateway,
|
|
(struct sockaddr *)&mask,
|
|
RTF_UP | RTF_GATEWAY, (struct rtentry **)0);
|
|
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);
|
|
sprintf(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, p, &vp, &mp)) {
|
|
if (swap_mp) {
|
|
mp->mnt_vfc->vfc_refcount--;
|
|
free(swap_mp, M_MOUNT);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
swap_mp = NULL;
|
|
if (nd->swap_nblks) {
|
|
|
|
/* Convert to DEV_BSIZE instead of Kilobyte */
|
|
nd->swap_nblks *= 2;
|
|
|
|
/*
|
|
* Create a fake mount point just for the swap vnode so that the
|
|
* swap file can be on a different server from the rootfs.
|
|
*/
|
|
nd->swap_args.fh = nd->swap_fh;
|
|
nd->swap_args.fhsize = nd->swap_fhsize;
|
|
l = ntohl(nd->swap_saddr.sin_addr.s_addr);
|
|
sprintf(buf,"%ld.%ld.%ld.%ld:%s",
|
|
(l >> 24) & 0xff, (l >> 16) & 0xff,
|
|
(l >> 8) & 0xff, (l >> 0) & 0xff,nd->swap_hostnam);
|
|
printf("NFS SWAP: %s\n",buf);
|
|
if (error = nfs_mountdiskless(buf, "/swap", 0,
|
|
&nd->swap_saddr, &nd->swap_args, p, &vp, &swap_mp))
|
|
return (error);
|
|
vfs_unbusy(swap_mp, p);
|
|
|
|
VTONFS(vp)->n_size = VTONFS(vp)->n_vattr.va_size =
|
|
nd->swap_nblks * DEV_BSIZE ;
|
|
|
|
/*
|
|
* 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;
|
|
VREF(vp);
|
|
swaponvp(p, vp, NODEV, nd->swap_nblks);
|
|
}
|
|
|
|
mp->mnt_flag |= MNT_ROOTFS;
|
|
mp->mnt_vnodecovered = NULLVP;
|
|
rootvp = vp;
|
|
vfs_unbusy(mp, p);
|
|
|
|
/*
|
|
* 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(path, which, mountflag, sin, args, p, vpp, mpp)
|
|
char *path;
|
|
char *which;
|
|
int mountflag;
|
|
struct sockaddr_in *sin;
|
|
struct nfs_args *args;
|
|
struct proc *p;
|
|
struct vnode **vpp;
|
|
struct mount **mpp;
|
|
{
|
|
struct mount *mp;
|
|
struct sockaddr *nam;
|
|
int error;
|
|
|
|
mp = *mpp;
|
|
|
|
if (!mp && (error = vfs_rootmountalloc("nfs", path, &mp))) {
|
|
printf("nfs_mountroot: NFS not configured");
|
|
return (error);
|
|
}
|
|
|
|
mp->mnt_kern_flag = 0;
|
|
mp->mnt_flag = mountflag;
|
|
nam = dup_sockaddr((struct sockaddr *)sin, 1);
|
|
if (error = mountnfs(args, mp, nam, which, path, vpp)) {
|
|
printf("nfs_mountroot: mount %s on %s: %d", path, which, error);
|
|
mp->mnt_vfc->vfc_refcount--;
|
|
vfs_unbusy(mp, p);
|
|
free(mp, M_MOUNT);
|
|
FREE(nam, M_SONAME);
|
|
return (error);
|
|
}
|
|
(void) copystr(which, mp->mnt_stat.f_mntonname, MNAMELEN - 1, 0);
|
|
*mpp = mp;
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
nfs_decode_args(nmp, argp)
|
|
struct nfsmount *nmp;
|
|
struct nfs_args *argp;
|
|
{
|
|
int s;
|
|
int adjsock;
|
|
int maxio;
|
|
|
|
s = splnet();
|
|
/*
|
|
* Silently clear NFSMNT_NOCONN if it's a TCP mount, it makes
|
|
* no sense in that context.
|
|
*/
|
|
if (argp->sotype == SOCK_STREAM)
|
|
nmp->nm_flag &= ~NFSMNT_NOCONN;
|
|
|
|
/* 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 &&
|
|
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;
|
|
|
|
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, (struct nfsreq *)0)) {
|
|
printf("nfs_args: retrying connect\n");
|
|
(void) tsleep((caddr_t)&lbolt,
|
|
PSOCK, "nfscon", 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* VFS Operations.
|
|
*
|
|
* mount system call
|
|
* It seems a bit dumb to copyinstr() the host and path here and then
|
|
* bcopy() them in mountnfs(), but I wanted to detect errors before
|
|
* doing the sockargs() call because sockargs() allocates an mbuf and
|
|
* an error after that means that I have to release the mbuf.
|
|
*/
|
|
/* ARGSUSED */
|
|
static int
|
|
nfs_mount(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 sockaddr *nam;
|
|
struct vnode *vp;
|
|
char pth[MNAMELEN], hst[MNAMELEN];
|
|
size_t len;
|
|
u_char nfh[NFSX_V3FHMAX];
|
|
|
|
if (path == NULL) {
|
|
nfs_mountroot(mp);
|
|
return (0);
|
|
}
|
|
error = copyin(data, (caddr_t)&args, sizeof (struct nfs_args));
|
|
if (error)
|
|
return (error);
|
|
if (args.version != NFS_ARGSVERSION) {
|
|
#ifdef COMPAT_PRELITE2
|
|
/*
|
|
* If the argument version is unknown, then assume the
|
|
* caller is a pre-lite2 4.4BSD client and convert its
|
|
* arguments.
|
|
*/
|
|
struct onfs_args oargs;
|
|
error = copyin(data, (caddr_t)&oargs, sizeof (struct onfs_args));
|
|
if (error)
|
|
return (error);
|
|
nfs_convert_oargs(&args,&oargs);
|
|
#else /* !COMPAT_PRELITE2 */
|
|
return (EPROGMISMATCH);
|
|
#endif /* COMPAT_PRELITE2 */
|
|
}
|
|
if (mp->mnt_flag & MNT_UPDATE) {
|
|
register struct nfsmount *nmp = VFSTONFS(mp);
|
|
|
|
if (nmp == NULL)
|
|
return (EIO);
|
|
/*
|
|
* When doing an update, we can't change from or to
|
|
* v3 and/or nqnfs, or change cookie translation
|
|
*/
|
|
args.flags = (args.flags &
|
|
~(NFSMNT_NFSV3|NFSMNT_NQNFS /*|NFSMNT_XLATECOOKIE*/)) |
|
|
(nmp->nm_flag &
|
|
(NFSMNT_NFSV3|NFSMNT_NQNFS /*|NFSMNT_XLATECOOKIE*/));
|
|
nfs_decode_args(nmp, &args);
|
|
return (0);
|
|
}
|
|
error = copyin((caddr_t)args.fh, (caddr_t)nfh, args.fhsize);
|
|
if (error)
|
|
return (error);
|
|
error = copyinstr(path, pth, MNAMELEN-1, &len);
|
|
if (error)
|
|
return (error);
|
|
bzero(&pth[len], MNAMELEN - len);
|
|
error = copyinstr(args.hostname, hst, MNAMELEN-1, &len);
|
|
if (error)
|
|
return (error);
|
|
bzero(&hst[len], MNAMELEN - len);
|
|
/* sockargs() call must be after above copyin() calls */
|
|
error = getsockaddr(&nam, (caddr_t)args.addr, args.addrlen);
|
|
if (error)
|
|
return (error);
|
|
args.fh = nfh;
|
|
error = mountnfs(&args, mp, nam, pth, hst, &vp);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Common code for mount and mountroot
|
|
*/
|
|
static int
|
|
mountnfs(argp, mp, nam, pth, hst, vpp)
|
|
register struct nfs_args *argp;
|
|
register struct mount *mp;
|
|
struct sockaddr *nam;
|
|
char *pth, *hst;
|
|
struct vnode **vpp;
|
|
{
|
|
register 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 = zalloc(nfsmount_zone);
|
|
bzero((caddr_t)nmp, sizeof (struct nfsmount));
|
|
TAILQ_INIT(&nmp->nm_uidlruhead);
|
|
TAILQ_INIT(&nmp->nm_bufq);
|
|
mp->mnt_data = (qaddr_t)nmp;
|
|
}
|
|
vfs_getnewfsid(mp);
|
|
nmp->nm_mountp = mp;
|
|
if (argp->flags & 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;
|
|
|
|
/*
|
|
* 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;
|
|
nmp->nm_wsize = NFS_WSIZE;
|
|
nmp->nm_rsize = NFS_RSIZE;
|
|
nmp->nm_readdirsize = NFS_READDIRSIZE;
|
|
nmp->nm_numgrps = NFS_MAXGRPS;
|
|
nmp->nm_readahead = NFS_DEFRAHEAD;
|
|
nmp->nm_leaseterm = NQ_DEFLEASE;
|
|
nmp->nm_deadthresh = NQ_DEADTHRESH;
|
|
CIRCLEQ_INIT(&nmp->nm_timerhead);
|
|
nmp->nm_inprog = NULLVP;
|
|
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);
|
|
bcopy(pth, mp->mnt_stat.f_mntonname, MNAMELEN);
|
|
nmp->nm_nam = nam;
|
|
/* Set up the sockets and per-host congestion */
|
|
nmp->nm_sotype = argp->sotype;
|
|
nmp->nm_soproto = argp->proto;
|
|
|
|
nfs_decode_args(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, (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_iosize(nmp);
|
|
/*
|
|
* 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);
|
|
if (error)
|
|
goto bad;
|
|
*vpp = NFSTOV(np);
|
|
|
|
/*
|
|
* Get file attributes for the mountpoint. This has the side
|
|
* effect of filling in (*vpp)->v_type with the correct value.
|
|
*/
|
|
VOP_GETATTR(*vpp, &attrs, curproc->p_ucred, curproc);
|
|
|
|
/*
|
|
* Lose the lock but keep the ref.
|
|
*/
|
|
VOP_UNLOCK(*vpp, 0, curproc);
|
|
|
|
return (0);
|
|
bad:
|
|
nfs_disconnect(nmp);
|
|
zfree(nfsmount_zone, nmp);
|
|
FREE(nam, M_SONAME);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* unmount system call
|
|
*/
|
|
static 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;
|
|
|
|
if (mntflags & MNT_FORCE)
|
|
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!
|
|
*/
|
|
error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np);
|
|
if (error)
|
|
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_state |= NFSSTA_DISMINPROG;
|
|
while (nmp->nm_inprog != NULLVP)
|
|
(void) tsleep((caddr_t)&lbolt, PSOCK, "nfsdism", 0);
|
|
error = vflush(mp, vp, flags);
|
|
if (error) {
|
|
vput(vp);
|
|
nmp->nm_state &= ~NFSSTA_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_state |= NFSSTA_DISMNT;
|
|
|
|
/*
|
|
* There are two reference counts and one lock to get rid of here.
|
|
*/
|
|
vput(vp);
|
|
vrele(vp);
|
|
vgone(vp);
|
|
nfs_disconnect(nmp);
|
|
FREE(nmp->nm_nam, M_SONAME);
|
|
|
|
if ((nmp->nm_flag & (NFSMNT_NQNFS | NFSMNT_KERB)) == 0)
|
|
zfree(nfsmount_zone, nmp);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Return root of a filesystem
|
|
*/
|
|
static 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);
|
|
error = nfs_nget(mp, (nfsfh_t *)nmp->nm_fh, nmp->nm_fhsize, &np);
|
|
if (error)
|
|
return (error);
|
|
vp = NFSTOV(np);
|
|
if (vp->v_type == VNON)
|
|
vp->v_type = VDIR;
|
|
vp->v_flag = VROOT;
|
|
*vpp = vp;
|
|
return (0);
|
|
}
|
|
|
|
extern int syncprt;
|
|
|
|
/*
|
|
* Flush out the buffer cache
|
|
*/
|
|
/* ARGSUSED */
|
|
static 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 ||
|
|
waitfor == MNT_LAZY)
|
|
continue;
|
|
if (vget(vp, LK_EXCLUSIVE, p))
|
|
goto loop;
|
|
error = VOP_FSYNC(vp, cred, waitfor, p);
|
|
if (error)
|
|
allerror = error;
|
|
vput(vp);
|
|
}
|
|
return (allerror);
|
|
}
|
|
|
|
/*
|
|
* NFS flat namespace lookup.
|
|
* Currently unsupported.
|
|
*/
|
|
/* ARGSUSED */
|
|
static 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 */
|
|
static int
|
|
nfs_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp)
|
|
register struct mount *mp;
|
|
struct fid *fhp;
|
|
struct sockaddr *nam;
|
|
struct vnode **vpp;
|
|
int *exflagsp;
|
|
struct ucred **credanonp;
|
|
{
|
|
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* Vnode pointer to File handle, should never happen either
|
|
*/
|
|
/* ARGSUSED */
|
|
static int
|
|
nfs_vptofh(vp, fhp)
|
|
struct vnode *vp;
|
|
struct fid *fhp;
|
|
{
|
|
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* Vfs start routine, a no-op.
|
|
*/
|
|
/* ARGSUSED */
|
|
static int
|
|
nfs_start(mp, flags, p)
|
|
struct mount *mp;
|
|
int flags;
|
|
struct proc *p;
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Do operations associated with quotas, not supported
|
|
*/
|
|
/* ARGSUSED */
|
|
static int
|
|
nfs_quotactl(mp, cmd, uid, arg, p)
|
|
struct mount *mp;
|
|
int cmd;
|
|
uid_t uid;
|
|
caddr_t arg;
|
|
struct proc *p;
|
|
{
|
|
|
|
return (EOPNOTSUPP);
|
|
}
|