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Linux 2.6 - man page for nfsservctl (linux section 2)

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 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 3.55 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					    2013-09-17				    NFSSERVCTL(2)


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