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/*
* $Id: fread.c 4203 2011-03-17 12:45:04Z baud $
*/
/*
* Copyright (C) 1990-2011 by CERN/IT/PDP/DM
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: fread.c,v $ $Revision: 4203 $ $Date: 2011-03-17 13:45:04 +0100 (Thu, 17 Mar 2011) $ CERN/IT/PDP/DM F. Hemmer, A. Trannoy";
#endif /* not lint */
/* fread.c Remote File I/O - write a binary file */
/*
* System remote file I/O definitions
*/
#define RFIO_KERNEL 1
#include "rfio.h"
#include "rfio_rfilefdt.h"
#include <stdlib.h>
/*
* Remote file read
*/
int DLL_DECL rfio_fread(ptr, size, items, fp)
void *ptr; /* buffer pointer */
int size, items; /* .. size items */
RFILE *fp; /* remote file pointer */
{
int rc ;
INIT_TRACE("RFIO_TRACE");
TRACE(1, "rfio", "rfio_fread(%x, %d, %d, %x)", ptr, size, items, fp);
/*
* Checking fp validity
*/
if ( fp == NULL ) {
errno = EBADF ;
TRACE(2,"rfio","rfio_fread() : FILE ptr is NULL ") ;
END_TRACE() ;
return 0 ;
}
if (rfio_rfilefdt_findptr(fp,FINDRFILE_WITH_SCAN) == -1) {
TRACE(2,"rfio","rfio_fread() : using local fread() ") ;
rfio_errno = 0;
rc= fread(ptr, size, items, (FILE *)fp) ;
if ( rc == 0 ) serrno = 0;
END_TRACE() ;
return rc ;
}
TRACE(2,"rfio","rfio_fread() : ------------>2") ;
/*
* Checking magic number
*/
if ( fp->magic != RFIO_MAGIC) {
int fps = fp->s;
serrno = SEBADVERSION ;
TRACE(2,"rfio","rfio_fread() : Bad magic number ") ;
free((char *)fp);
(void) close(fps) ;
END_TRACE();
return 0 ;
}
/*
* The file is remote
*/
rc= rfio_read(fp->s,ptr,size*items) ;
switch(rc) {
case -1:
#ifdef linux
((RFILE *)fp)->eof |= _IO_ERR_SEEN ;
#else
#if defined( __APPLE__)
((RFILE *)fp)->eof |= __SERR ;
#else
#ifdef __Lynx__
((RFILE *)fp)->eof |= _ERR ;
#else
((RFILE *)fp)->eof |= _IOERR ;
#endif
#endif
#endif
rc= 0 ;
break ;
case 0:
#ifdef linux
((RFILE *)fp)->eof |= _IO_EOF_SEEN ;
#else
#if defined( __APPLE__)
((RFILE *)fp)->eof |= __SEOF ;
#else
#ifdef __Lynx__
((RFILE *)fp)->eof |= _EOF ;
#else
((RFILE *)fp)->eof |= _IOEOF ;
#endif
#endif
#endif
break ;
default:
rc= rc/size ;
break ;
}
END_TRACE() ;
return rc ;
}
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