NAME

     nfsservctl - syscall interface to kernel nfs daemon

SYNOPSIS

     #include <linux/nfsd/syscall.h>

     nfsservctl(int   cmd,   struct   nfsctl_arg   *argp,   union
     nfsctl_res *resp

DESCRIPTION

     /*
      * 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. */
     #define NFSCTL_GETFH            6       /* get an fh (used by mountd) */

     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;
                     unsigned int            u_debug;
             } u;
     }

     union nfsctl_res {
             struct knfs_fh          cr_getfh;
             unsigned int            cr_debug;
     };

RETURN VALUE

     On success, zero is returned.  On error, -1 is returned, and
     errno is set appropriately.

CONFORMING TO

     This call is Linux-specific.