man2/nfsservctl.2

   1 .\" %%%LICENSE_START(PUBLIC_DOMAIN)
   2 .\" This text is in the public domain.
   3 .\" %%%LICENSE_END
   4 .\"
   5 .TH NFSSERVCTL 2 2019-03-06 "Linux" "Linux Programmer's Manual"
   6 .SH NAME
   7 nfsservctl \- syscall interface to kernel nfs daemon
   8 .SH SYNOPSIS
   9 .nf
  10 .B #include <linux/nfsd/syscall.h>
  11 .PP
  12 .BI "long nfsservctl(int " cmd ", struct nfsctl_arg *" argp ,
  13 .BI "                union nfsctl_res *" resp );
  14 .fi
  15 .SH DESCRIPTION
  16 .IR Note :
  17 Since Linux 3.1, this system call no longer exists.
  18 It has been replaced by a set of files in the
  19 .I nfsd
  20 filesystem; see
  21 .BR nfsd (7).
  22 .PP
  23 .in +4n
  24 .EX
  25 /*
  26  * These are the commands understood by nfsctl().
  27  */
  28 #define NFSCTL_SVC        0  /* This is a server process. */
  29 #define NFSCTL_ADDCLIENT  1  /* Add an NFS client. */
  30 #define NFSCTL_DELCLIENT  2  /* Remove an NFS client. */
  31 #define NFSCTL_EXPORT     3  /* Export a filesystem. */
  32 #define NFSCTL_UNEXPORT   4  /* Unexport a filesystem. */
  33 #define NFSCTL_UGIDUPDATE 5  /* Update a client's UID/GID map
  34                                 (only in Linux 2.4.x and earlier). */
  35 #define NFSCTL_GETFH      6  /* Get a file handle (used by mountd)
  36                                 (only in Linux 2.4.x and earlier). */
  37
  38 struct nfsctl_arg {
  39     int                       ca_version;     /* safeguard */
  40     union {
  41         struct nfsctl_svc     u_svc;
  42         struct nfsctl_client  u_client;
  43         struct nfsctl_export  u_export;
  44         struct nfsctl_uidmap  u_umap;
  45         struct nfsctl_fhparm  u_getfh;
  46         unsigned int          u_debug;
  47     } u;
  48 }
  49
  50 union nfsctl_res {
  51         struct knfs_fh          cr_getfh;
  52         unsigned int            cr_debug;
  53 };
  54 .EE
  55 .in
  56 .SH RETURN VALUE
  57 On success, zero is returned.
  58 On error, \-1 is returned, and
  59 .I errno
  60 is set appropriately.
  61 .SH VERSIONS
  62 This system call was removed from the Linux kernel in version 3.1.
  63 Library support was removed from glibc in version 2.28.
  64 .SH CONFORMING TO
  65 This call is Linux-specific.
  66 .SH SEE ALSO
  67 .BR nfsd (7)