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.  It has been
       replaced by a set of files in the nfsd filesystem; see nfsd(7).

       /*
	* 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 filesystem. */
       #define NFSCTL_UNEXPORT	   4	/* Unexport a filesystem. */
       #define NFSCTL_UGIDUPDATE   5	/* Update a client's UID/GID map
					   (only in Linux 2.4.x and earlier). */
       #define NFSCTL_GETFH	   6	/* Get a file handle (used by mountd)
					   (only in Linux 2.4.x and earlier). */

       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 4.10 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest	  version     of     this    page,    can    be	   found    at
       https://www.kernel.org/doc/man-pages/.



Linux				  2016-12-12			 NFSSERVCTL(2)