man2/nfsservctl.2

   1 .\" %%%LICENSE_START(PUBLIC_DOMAIN)
   2 .\" This text is in the public domain.
   3 .\" %%%LICENSE_END
   4 .\"
   5 .\" FIXME . The description of nfsservctl() on this page
   6 .\" is woefully thin.
   7 .\"
   8 .TH NFSSERVCTL 2 2015-05-07 "Linux" "Linux Programmer's Manual"
   9 .SH NAME
  10 nfsservctl \- syscall interface to kernel nfs daemon
  11 .SH SYNOPSIS
  12 .nf
  13 .B #include <linux/nfsd/syscall.h>
  14 .sp
  15 .BI "long nfsservctl(int " cmd ", struct nfsctl_arg *" argp ,
  16 .BI "                union nfsctl_res *" resp );
  17 .fi
  18 .SH DESCRIPTION
  19 .IR Note :
  20 Since Linux 3.1, this system call no longer exists.
  21 It has been replaced by a set of files in the
  22 .I nfsd
  23 filesystem; see
  24 .BR nfsd (7).
  25
  26 .nf
  27 /*
  28  * These are the commands understood by nfsctl().
  29  */
  30 #define NFSCTL_SVC          0    /* This is a server process. */
  31 #define NFSCTL_ADDCLIENT    1    /* Add an NFS client. */
  32 #define NFSCTL_DELCLIENT    2    /* Remove an NFS client. */
  33 #define NFSCTL_EXPORT       3    /* Export a filesystem. */
  34 #define NFSCTL_UNEXPORT     4    /* Unexport a filesystem. */
  35 #define NFSCTL_UGIDUPDATE   5    /* Update a client's UID/GID map
  36                                     (only in Linux 2.4.x and earlier). */
  37 #define NFSCTL_GETFH        6    /* Get a file handle (used by mountd)
  38                                     (only in Linux 2.4.x and earlier). */
  39
  40 struct nfsctl_arg {
  41     int                       ca_version;     /* safeguard */
  42     union {
  43         struct nfsctl_svc     u_svc;
  44         struct nfsctl_client  u_client;
  45         struct nfsctl_export  u_export;
  46         struct nfsctl_uidmap  u_umap;
  47         struct nfsctl_fhparm  u_getfh;
  48         unsigned int          u_debug;
  49     } u;
  50 }
  51
  52 union nfsctl_res {
  53         struct knfs_fh          cr_getfh;
  54         unsigned int            cr_debug;
  55 };
  56 .fi
  57 .SH RETURN VALUE
  58 On success, zero is returned.
  59 On error, \-1 is returned, and
  60 .I errno
  61 is set appropriately.
  62 .SH CONFORMING TO
  63 This call is Linux-specific.