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implement vptofh and fhtovp for nfs.

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This commit is contained in:
yamt 2006-09-02 12:40:58 +00:00
parent d7d8adb6ea
commit 3311de9ddc
1 changed files with 51 additions and 18 deletions
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69
sys/nfs/nfs_vfsops.c
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@ -1,4 +1,4 @@
/* $NetBSD: nfs_vfsops.c,v 1.162 2006/09/02 07:26:47 christos Exp $ */
/* $NetBSD: nfs_vfsops.c,v 1.163 2006/09/02 12:40:58 yamt Exp $ */
/*
* Copyright (c) 1989, 1993, 1995
@ -35,7 +35,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: nfs_vfsops.c,v 1.162 2006/09/02 07:26:47 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: nfs_vfsops.c,v 1.163 2006/09/02 12:40:58 yamt Exp $");
#if defined(_KERNEL_OPT)
#include "opt_compat_netbsd.h"
@ -1056,32 +1056,65 @@ SYSCTL_SETUP(sysctl_vfs_nfs_setup, "sysctl vfs.nfs subtree setup")
CTL_VFS, 2, NFS_IOTHREADS, CTL_EOL);
}
/*
* At this point, this should never happen
*/
/* ARGSUSED */
int
nfs_fhtovp(mp, fhp, vpp)
struct mount *mp;
struct fid *fhp;
struct vnode **vpp;
nfs_fhtovp(struct mount *mp, struct fid *fid, struct vnode **vpp)
{
size_t fidsize;
size_t fhsize;
struct nfsnode *np;
int error;
return (EINVAL);
fidsize = fid->fid_len;
if (fidsize < sizeof(*fid)) {
return EINVAL;
}
fhsize = fidsize - sizeof(*fid);
if ((fhsize % NFSX_UNSIGNED) != 0) {
return EINVAL;
}
if ((VFSTONFS(mp)->nm_flag & NFSMNT_NFSV3) != 0) {
if (fhsize > NFSX_V3FHMAX || fhsize == 0) {
return EINVAL;
}
} else {
if (fhsize != NFSX_V2FH) {
return EINVAL;
}
}
error = nfs_nget(mp, (void *)fid->fid_data, fhsize, &np);
if (error) {
return error;
}
*vpp = NFSTOV(np);
return 0;
}
/*
* Vnode pointer to File handle, should never happen either
*/
/* ARGSUSED */
int
nfs_vptofh(vp, fhp, fh_size)
struct vnode *vp;
struct fid *fhp;
size_t *fh_size;
nfs_vptofh(struct vnode *vp, struct fid *buf, size_t *bufsize)
{
struct nfsnode *np;
struct fid *fid;
size_t fidsize;
int error = 0;
return (EINVAL);
np = VTONFS(vp);
fidsize = sizeof(*fid) + np->n_fhsize;
if (*bufsize < fidsize) {
error = E2BIG;
}
*bufsize = fidsize;
if (error == 0) {
struct fid fid_store;
fid = &fid_store;
memset(fid, 0, sizeof(*fid));
fid->fid_len = fidsize;
memcpy(buf, fid, sizeof(*fid));
memcpy(buf->fid_data, np->n_fhp, np->n_fhsize);
}
return error;
}
/*