AutoXDR - NFSv4 Example Server code

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This is the code that implements the NULL procedure and calls the server side implementation routines for queued procedures.

Please note that some implementations of rpcgen omit the "_svc" suffix on the names of the server side procedures. To accommodate these, you must specify the AutoGen command line option, "-DXDR_NO_SVC_SUFFIX" or set the XDR_NO_SVC_SUFFIX environment variable before generating the output. Also please note that in such an environment there is a naming conflict between the client side stubs and the server side implementation routines. It may be necessary to hand edit these modules to be able to link them into a single executable for debugging.

The following example is from NFSv4 with all but one queued call removed:

/*
 *  DO NOT EDIT THIS FILE   (nfsv4-server.c)
 *  
 *  It has been AutoGen-ed  March  1, 2010 at 02:26:41 PM by AutoGen 5.10.1
 *  From the definitions    nfsv4.def
 *  and the template file   autoxdr.tpl
 *
 *  This file has been generated by the AutoXDR AutoGen template suite.
 *
 *  These files are compatible with:
 *  RFC1831 - Remote Procedure Call Protocol Specification Version 2
 *  RFC1832 - External Data Representation Standard
 *  and are intended to be used as a layer on top of the ONC IDL
 *  in conjunction with RPCGEN.
 *
 */
#include <stdio.h>
#include <errno.h>

#include "nfsv4-svhdr.h"
#include "nfsv4.h"

/*
 *  NULL Server Routine
 */
void*
nfs4_null_4_svc( void* arg, struct svc_req *rqstp )
{
  static char z;
  return (void*)&z;
}

/*
 *  COMPOUND Server Dispatch Routine
 */
nfs4_compound_res*
nfs4_compound_4_svc( nfs4_compound_args* args, struct svc_req *rqstp )
{
  static nfs4_compound_res res;
  nfs4_status stat = NFS4_STATUS_OK;

  if (res.resarray.resarray_len != 0)
    xdr_free( (xdrproc_t)xdr_nfs4_compound_res, (void*)&res );
  memset( (void*)&res, 0, sizeof( res ));

  {
    u_nfs4_compound_args* p_op  = args->argarray.argarray_val;
    int ct  = args->argarray.argarray_len / sizeof( *p_op );
    int idx = 0;
    u_nfs4_compound_res*  p_res =
      (u_nfs4_compound_res*)malloc( ct * sizeof( *p_res ));

    if (p_res == NULL)
      return (nfs4_compound_res*)NULL;
    res.resarray.resarray_val = p_res;

    while (--ct >= 0)
      {
        p_res[idx].resop = p_op->argop;
        switch (p_op->argop)
        {
        case NFS4_ACCESS4:
          stat =
            nfs4_access4_svc( args,
                 &(p_res[idx].u_nfs4_compound_res_u.op_access4),
                 &(p_op->u_nfs4_compound_args_u.op_access4) );
          break;

        default:
          stat = EINVAL;
        }

        /*
         *  The status field is always defined to be in the same place for
         *  all the commands:  the start of the reply structure
         */
        *(nfs4_status*)(void*)(p_res + idx) = stat;
        if (stat != NFS4_STATUS_OK)
          break;
        idx++;
        p_op++;
      }

    res.resarray.resarray_len = idx * sizeof( *p_res );
    res.status = stat;
  }

  return &res;
}

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