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 It has been replaced by a set of files in the nfsd filesystem; see nfsd(7).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 4.16 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/.