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/* $FreeBSD$ */
/* $Id: nfs4_vfs_subs.c,v 1.5 2003/11/05 14:59:00 rees Exp $ */
/*
* copyright (c) 2003
* the regents of the university of michigan
* all rights reserved
*
* permission is granted to use, copy, create derivative works and redistribute
* this software and such derivative works for any purpose, so long as the name
* of the university of michigan is not used in any advertising or publicity
* pertaining to the use or distribution of this software without specific,
* written prior authorization. if the above copyright notice or any other
* identification of the university of michigan is included in any copy of any
* portion of this software, then the disclaimer below must also be included.
*
* this software is provided as is, without representation from the university
* of michigan as to its fitness for any purpose, and without warranty by the
* university of michigan of any kind, either express or implied, including
* without limitation the implied warranties of merchantability and fitness for
* a particular purpose. the regents of the university of michigan shall not be
* liable for any damages, including special, indirect, incidental, or
* consequential damages, with respect to any claim arising out of or in
* connection with the use of the software, even if it has been or is hereafter
* advised of the possibility of such damages.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/limits.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/module.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sockio.h>
#include <sys/vnode.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
#include <vm/uma.h>
#include <net/if.h>
#include <net/route.h>
#include <netinet/in.h>
#include <rpc/rpcclnt.h>
#include <nfs/rpcv2.h>
#include <nfs/nfsproto.h>
#include <nfsclient/nfs.h>
#include <nfsclient/nfsmount.h>
#include <nfs/xdr_subs.h>
#include <nfsclient/nfsm_subs.h>
#include <nfsclient/nfsdiskless.h>
/* NFSv4 */
#include <nfs4client/nfs4.h>
#include <nfs4client/nfs4m_subs.h>
#include <nfs4client/nfs4_vfs.h>
#include <nfsclient/nfsnode.h>
static int nfs_iosize(struct nfsmount *nmp);
static int
nfs_iosize(struct nfsmount *nmp)
{
int iosize;
/*
* Calculate the size used for io buffers. Use the larger
* of the two sizes to minimise nfs requests but make sure
* that it is at least one VM page to avoid wasting buffer
* space.
*/
iosize = max(nmp->nm_rsize, nmp->nm_wsize);
if (iosize < PAGE_SIZE) iosize = PAGE_SIZE;
return iosize;
}
void
nfs4_vfsop_fsinfo(struct nfsv4_fattr *fap, struct nfsmount *nmp)
{
uint32_t max;
if (fap->fa4_valid & FA4V_FSID) {
nmp->nm_fsid.val[0] = fap->fa4_fsid_major;
nmp->nm_fsid.val[1] = fap->fa4_fsid_minor;
}
if (fap->fa4_valid & FA4V_MAXREAD) {
max = fap->fa4_maxread;
if (max < nmp->nm_rsize) {
nmp->nm_rsize = max & ~(NFS_FABLKSIZE - 1);
if (nmp->nm_rsize == 0)
nmp->nm_rsize = max;
}
if (max < nmp->nm_readdirsize) {
nmp->nm_readdirsize = max & ~(NFS_DIRBLKSIZ - 1);
if (nmp->nm_readdirsize == 0)
nmp->nm_readdirsize = max;
}
}
if (fap->fa4_valid & FA4V_MAXWRITE) {
max = fap->fa4_maxwrite;
if (max < nmp->nm_wsize) {
nmp->nm_wsize = max & ~(NFS_FABLKSIZE - 1);
if (nmp->nm_wsize == 0)
nmp->nm_wsize = max;
}
}
if (fap->fa4_valid & FA4V_LEASE_TIME)
nmp->nm_lease_time = fap->fa4_lease_time;
/* nmp->nm_flag |= NFSMNT_GOTFSINFO; */
}
void
nfs4_vfsop_statfs(struct nfsv4_fattr *fap, struct statfs *sbp, struct mount *mp)
{
struct nfsmount *nmp = VFSTONFS(mp);
sbp->f_flags = nmp->nm_flag;
sbp->f_iosize = nfs_iosize(nmp);
sbp->f_bsize = NFS_FABLKSIZE;
if (fap->fa4_valid & FA4V_FSID) {
sbp->f_fsid.val[0] = fap->fa4_fsid_major;
sbp->f_fsid.val[1] = fap->fa4_fsid_minor;
}
sbp->f_ffree = fap->fa4_valid & FA4V_FFREE ? fap->fa4_ffree : 0;
/* sbp->f_ftotal = fa->fa4_valid & FA4_FTOTAL ? fa->fa4_ftotal : 0; */
sbp->f_bavail = fap->fa4_valid & FA4V_SAVAIL ?
fap->fa4_savail / NFS_FABLKSIZE : 500000;
sbp->f_bfree = fap->fa4_valid & FA4V_SFREE ?
fap->fa4_sfree / NFS_FABLKSIZE : 500000;
sbp->f_blocks = fap->fa4_valid & FA4V_STOTAL ?
fap->fa4_stotal / NFS_FABLKSIZE : 1000000;
if (sbp != &mp->mnt_stat) {
sbp->f_type = mp->mnt_vfc->vfc_typenum;
bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
}
}
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