svc_freeargs Macro

Important: The macro is exported from both the libc and the libnsl libraries.

svc_freeargs Macro Exported from the libc Library

Purpose

Frees data allocated by the Remote Procedure Call/eXternal Data Representation (RPC/XDR) system.

Library

C Library (libc.a)

Syntax

#include <rpc/rpc.h>

svc_freeargs ( xprt, inproc, in) SVCXPRT *xprt; xdrproc_t inproc; char *in;

Description

The svc_freeargs macro frees data allocated by the RPC/XDR system. This data is allocated when the RPC/XDR system decodes the arguments to a service procedure with the svc_getargs macro.

Parameters

Item	Description
xprt	Points to the RPC service transport handle.
inproc	Specifies the XDR routine that decodes the arguments.
in	Specifies the address where the procedure arguments are placed.

svc_freeargs Macro Exported from the libnsl Library

Purpose

Frees data allocated by the Remote Procedure Call/eXternal Data Representation (RPC/XDR) system.

Library

Network Services Library (libnsl.a)

Syntax

#include <rpc/rpc.h>

svc_freeargs ( xprt,  inproc, in)
SVCXPRT *xprt;
xdrproc_t inproc;
caddr_tin;

Description

The svc_freeargs macro frees data allocated by the RPC/XDR system. This data is allocated when the RPC/XDR system decodes the arguments to a service procedure with the svc_getargs macro.

Parameters

Item	Description
xprt	Points to the RPC service transport handle.
inproc	Specifies the XDR routine that decodes the arguments.
in	Specifies the address where the procedure arguments are placed.

Examples

#include <stdlib.h>
#include <rpc/rpc.h>

#define PROG 0x3fffffffL
#define VERS 0x1L

static void sample_dispatch();
    
main()
{
    char *nettype = "tcp";
    int no_of_handles;

    /* Create RPC service handle and register with RPCBIND service */

    if((no_of_handles = svc_create(sample_dispatch, PROG, VERS,nettype)) == 0)
    {
         fprintf(stdout,"Error in svc_create!");
         exit(EXIT_FAILURE);
    }
  
    svc_run();
    return 0;
} 

/* following is the sample dispatch routine*/
static void sample_dispatch(struct svc_req *request, SVCXPRT *xprt)
{
    int args,result;
      
    /* decode argument from client using xdr_int() */
    if (svc_getargs(xprt, (xdrproc_t)xdr_int,(caddr_t)&args) == FALSE) 
    {  
        svcerr_decode(xprt);
        fprintf(stdout,"Error in svc_getargs!");
        return;
    }
        
    /* call service procedure */
 
    /* free allocated  data */
    if (svc_freeargs(xprt, (xdrproc_t)xdr_int,(caddr_t)&args) == FALSE) 
    {  
        fprintf(stdout,"Error in svc_freeargs!");
        return;
    }
    /* send reply to client */ 
    if(!svc_sendreply(xprt,(xdrproc_t)xdr_int,(caddr_t)&result))
    {
        fprintf(stdout,"Error in svc_sendreply!");
        svcerr_systemerr(xprt);
    }
}