xdr_accepted_reply,
  xdr_authsys_parms,
  xdr_callhdr, xdr_callmsg,
  xdr_opaque_auth,
  xdr_rejected_reply,
  xdr_replymsg —
XDR library routines for remote procedure calls
Standard C Library (libc, -lc)
#include <rpc/rpc.h>
bool_t
  
  xdr_accepted_reply(XDR
    *xdrs, const struct
    accepted_reply *ar);
bool_t
  
  xdr_authsys_parms(XDR
    *xdrs, struct
    authsys_parms *aupp);
void
  
  xdr_callhdr(XDR
    *xdrs, struct rpc_msg
    *chdr);
bool_t
  
  xdr_callmsg(XDR
    *xdrs, struct rpc_msg
    *cmsg);
bool_t
  
  xdr_opaque_auth(XDR
    *xdrs, struct opaque_auth
    *ap);
bool_t
  
  xdr_rejected_reply(XDR
    *xdrs, const struct
    rejected_reply *rr);
bool_t
  
  xdr_replymsg(XDR
    *xdrs, const struct
    rpc_msg *rmsg);
These routines are used for describing the RPC messages in XDR language. They
  should normally be used by those who do not want to use the RPC package
  directly. These routines return TRUE if they succeed, FALSE otherwise.
See rpc(3) for the definition of the
  XDR data structure.
  - xdr_accepted_reply()
- Used to translate between RPC reply messages and their external
      representation. It includes the status of the RPC call in the XDR language
      format. In the case of success, it also includes the call results.
- xdr_authsys_parms()
- Used for describing UNIX operating system credentials. It includes
      machine-name, uid, gid list, etc.
- xdr_callhdr()
- Used for describing RPC call header messages. It encodes the static part
      of the call message header in the XDR language format. It includes
      information such as transaction ID, RPC version number, program and
      version number.
- xdr_callmsg()
- Used for describing RPC call messages. This includes all the RPC call
      information such as transaction ID, RPC version number, program number,
      version number, authentication information, etc. This is normally used by
      servers to determine information about the client RPC call.
- xdr_opaque_auth()
- Used for describing RPC opaque authentication information messages.
- xdr_rejected_reply()
- Used for describing RPC reply messages. It encodes the rejected RPC
      message in the XDR language format. The message could be rejected either
      because of version number mis-match or because of authentication
    errors.
- xdr_replymsg()
- Used for describing RPC reply messages. It translates between the RPC
      reply message and its external representation. This reply could be either
      an acceptance, rejection or NULL.