* Descripción XDR */ const MAXUSERNAME=32; const MAXFILELEN=65535; const MAXNAMELEN=255;
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/* Descripción XDR */ const MAXUSERNAME=32; const MAXFILELEN=65535; const MAXNAMELEN=255; enum filekind { TEXT=0, DATA=1, EXEC=2 }; union filetype switch (filekind kind) { case TEXT: void; case DATA: string creator<MAXNAMELEN>; case EXEC: string interpretor<MAXNAMELEN>; }; struct file { string filename<MAXNAMELEN>; filetype type; string owner<MAXUSERNAME>; opaque data <MAXFILELEN>; }; fileXDR.x
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/* Descripción XDR */ const MAXUSERNAME=32; const MAXFILELEN=65535; const MAXNAMELEN=255; enum filekind { TEXT=0, DATA=1, EXEC=2 }; union filetype switch (filekind kind) { case TEXT: void; case DATA: string creator; - PowerPoint PPT Presentation
Transcript of * Descripción XDR */ const MAXUSERNAME=32; const MAXFILELEN=65535; const MAXNAMELEN=255;
/* Descripción XDR */
const MAXUSERNAME=32;const MAXFILELEN=65535;const MAXNAMELEN=255;enum filekind { TEXT=0, DATA=1, EXEC=2};union filetype switch (filekind kind) { case TEXT: void; case DATA: string creator<MAXNAMELEN>; case EXEC: string interpretor<MAXNAMELEN>;};struct file { string filename<MAXNAMELEN>; filetype type; string owner<MAXUSERNAME>; opaque data <MAXFILELEN>;};
fileXDR.x
#include <rpc/types.h>
#define MAXUSERNAME 32#define MAXFILELEN 65535#define MAXNAMELEN 255
enum filekind {TEXT = 0,DATA = 1,EXEC = 2,
};typedef enum filekind filekind;bool_t xdr_filekind();
struct filetype {filekind kind;union {
char *creator;char *interpretor;
} filetype_u;};typedef struct filetype filetype;bool_t xdr_filetype();
struct file {char *filename;filetype type;char *owner;struct {
u_int data_len;char *data_val;
} data;};typedef struct file file;bool_t xdr_file();
fileXDR.h
#include <rpc/rpc.h>#include "fileXDR.h"
bool_txdr_filekind(xdrs, objp)
XDR *xdrs;filekind *objp;
{if (!xdr_enum(xdrs, (enum_t *)objp)) {
return (FALSE);}return (TRUE);
}
fileXDR_xdr.c (I)
bool_txdr_filetype(xdrs, objp)
XDR *xdrs;filetype *objp;
{ if (!xdr_filekind(xdrs, &objp->kind)) {
return (FALSE); } switch (objp->kind) { case TEXT:
break; case DATA:
if (!xdr_string(xdrs, &objp->filetype_u.creator, MAXNAMELEN)) { return (FALSE);}break;
case EXEC:if (!xdr_string(xdrs, &objp->filetype_u.interpretor, MAXNAMELEN)){ return (FALSE);}break;
default:return (FALSE);
} return (TRUE);}
fileXDR_xdr.c (II)
bool_txdr_file(xdrs, objp)
XDR *xdrs;file *objp;
{if (!xdr_string(xdrs, &objp->filename, MAXNAMELEN)) {
return (FALSE);}if (!xdr_filetype(xdrs, &objp->type)) {
return (FALSE);}if (!xdr_string(xdrs, &objp->owner, MAXUSERNAME)) {
return (FALSE);}if (!xdr_bytes(xdrs, (char **)&objp->data.data_val,
(u_int *)&objp->data.data_len, MAXFILELEN)) {return (FALSE);
}return (TRUE);
}
fileXDR_xdr.c (III)
#include <stdio.h>#include <rpc/rpc.h>#include "fileXDR.h"int main(){ XDR xdr_handle; FILE *fp; file fichero; char data[5]; data[0]='a'; data[1]='b'; data[2]='c'; data[3]='d'; data[4]='e';
if((fp=fopen("salida","w"))!=NULL) { xdrstdio_create(&xdr_handle,fp,XDR_ENCODE);
fichero.filename="nombrefichero"; fichero.type.kind=TEXT; fichero.owner="nombrepropietario"; fichero.data.data_len=5; fichero.data.data_val=data; xdr_file(&xdr_handle,&fichero); xdr_destroy(&xdr_handle); fclose(fp); }}
Escribir.c
