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

nfsservctl - syscall interface to kernel nfs daemon

#include <linux/nfsd/syscall.h>
long nfsservctl(int cmd, struct nfsctl_arg *argp,
                union nfsctl_res *resp);

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 It has been replaced by a set of files in the nfsd filesystem; see nfsd(7).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

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

This system call was removed from the Linux kernel in version 3.1. Library support was removed from glibc in version 2.28.

This call is Linux-specific.
2019-03-06 Linux