centos man page for nfsservctl

NFSSERVCTL(2)						     Linux Programmer's Manual						     NFSSERVCTL(2)

NAME
       nfsservctl - syscall interface to kernel nfs daemon

SYNOPSIS
       #include <linux/nfsd/syscall.h>

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

DESCRIPTION
       Note: Since Linux 3.1, this system call no longer exists.

       /*
	* 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.

COLOPHON
       This  page is part of release 3.53 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    2012-03-05							     NFSSERVCTL(2)