NAME¶

nfsservctl - syscall interface to kernel nfs daemon

LIBRARY¶

Standard C library (libc, -lc)

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 It has been replaced by a set of files in the nfsd filesystem; see nfsd(7).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(8))


                                (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 to indicate the error.

VERSIONS¶

This system call was removed in Linux 3.1. Library support was removed in glibc 2.28.

STANDARDS¶

This call is Linux-specific.

SEE ALSO¶

nfsd(7)