/*
* include/linux/nfsd/syscall.h
*
* This file holds all declarations for the knfsd syscall interface.
*
* Copyright (C) 1995-1997 Olaf Kirch <[email protected]>
*/

#ifndef NFSD_SYSCALL_H
#define NFSD_SYSCALL_H

#include <linux/types.h>
#include <linux/nfsd/export.h>

/*
* Version of the syscall interface
*/
#define NFSCTL_VERSION 0x0201

/*
* These are the commands understood by nfsctl().
*/
#define NFSCTL_SVC 0 /* This is a server process. */
#define NFSCTL_ADDCLIENT 1 /* Add an NFS client. */
#define NFSCTL_DELCLIENT 2 /* Remove an NFS client. */
#define NFSCTL_EXPORT 3 /* export a file system. */
#define NFSCTL_UNEXPORT 4 /* unexport a file system. */
/*#define NFSCTL_UGIDUPDATE 5 / * update a client's uid/gid map. DISCARDED */
/*#define NFSCTL_GETFH 6 / * get an fh by ino DISCARDED */
#define NFSCTL_GETFD 7 /* get an fh by path (used by mountd) */
#define NFSCTL_GETFS 8 /* get an fh by path with max FH len */

/* SVC */
struct nfsctl_svc {
unsigned short svc_port;
int svc_nthreads;
};

/* ADDCLIENT/DELCLIENT */
struct nfsctl_client {
char cl_ident[NFSCLNT_IDMAX+1];
int cl_naddr;
struct in_addr cl_addrlist[NFSCLNT_ADDRMAX];
int cl_fhkeytype;
int cl_fhkeylen;
unsigned char cl_fhkey[NFSCLNT_KEYMAX];
};

/* EXPORT/UNEXPORT */
struct nfsctl_export {
char ex_client[NFSCLNT_IDMAX+1];
char ex_path[NFS_MAXPATHLEN+1];
__kernel_old_dev_t ex_dev;
__kernel_ino_t ex_ino;
int ex_flags;
__kernel_uid_t ex_anon_uid;
__kernel_gid_t ex_anon_gid;
};

/* GETFD */
struct nfsctl_fdparm {
struct sockaddr gd_addr;
char gd_path[NFS_MAXPATHLEN+1];
int gd_version;
};

/* GETFS - GET Filehandle with Size */
struct nfsctl_fsparm {
struct sockaddr gd_addr;
char gd_path[NFS_MAXPATHLEN+1];
int gd_maxlen;
};

/*
* This is the argument union.
*/
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;
/*
* The following dummy member is needed to preserve binary compatibility
* on platforms where alignof(void*)>alignof(int). It's needed because
* this union used to contain a member (u_umap) which contained a
* pointer.
*/
void *u_ptr;
} u;
#define ca_svc u.u_svc
#define ca_client u.u_client
#define ca_export u.u_export
#define ca_getfd u.u_getfd
#define ca_getfs u.u_getfs
};

union nfsctl_res {
__u8 cr_getfh[NFS_FHSIZE];
struct knfsd_fh cr_getfs;
};


#endif /* NFSD_SYSCALL_H */