mismatch between 2.6.19 and nfs-utils-1.0.10 nfsctl_arg structure???

[Wouter Batelaan <wouter.batelaan@nxp.com>]

Hi,

I'm trying to get an nfs server setup on our embedded 2.6.19 kernel 
system. I've chosen to use the kernel nfsd module,
and am using the latest nfs-utils.
It all starts running, but I get this:
     mount -t nfs 127.0.0.1:/etc /tmp/try
mount: 127.0.0.1:/etc failed, reason given by server: Permission denied
mount: nfsmount failed: Bad file descriptor
mount: Mounting 127.0.0.1:/etc on /tmp/try failed: Bad file descriptor

Having added a bit of debugging /var/log/messages shows this:
daemon.warn mountd[545]: getfh.c:73: getfh_size (/etc)
daemon.warn mountd[545]: nfsctl.c:26: syscall nfsctl
daemon.warn mountd[545]: nfsctl.c:28: syscall nfsctl => -1
daemon.warn mountd[545]: getfh failed: Operation not permitted

Looking in detail at the syscall made, I see that the structure
definition for nfsctl_arg is different between kernel and nfs-utils.

Huh? What am I missing here? Any pointers appreciated.
Wouter.

Kernel 2.6.19.1: include/linux/nfsd/syscall.h:
struct nfsctl_arg {
	int			ca_version;	/* safeguard */
	union {
		struct nfsctl_svc	u_svc;
		struct nfsctl_client	u_client;
		struct nfsctl_export	u_export;
		struct nfsctl_fdparm	u_getfd;
		struct nfsctl_fsparm	u_getfs;
                 <snip>
		void *u_ptr;
	} u;


nfs-utils 1.0.10: support/include/nfs/nfs.h:
struct nfsctl_arg {
	int			ca_version;	/* safeguard */
	union {
		struct nfsctl_svc	u_svc;
		struct nfsctl_client	u_client;
		struct nfsctl_export	u_export;
		struct nfsctl_uidmap	u_umap;
		struct nfsctl_fhparm	u_getfh;
		struct nfsctl_fdparm	u_getfd;
		struct nfsctl_fsparm	u_getfs;
	} u;