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  It has been
   replaced by a set of files in the nfsd filesystem; see nfsd(7).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 4.09 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/.

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